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Proof Pi Irrational

“这个人”并不存在,但他却是20世纪最伟大的数学家之 – Bourbaki

Geometry Proof : Sum of Squares

Spyder Typing Delay

Recently, the Spyder IDE faced serious typing delay or lag. Basically, after entering something using the keyboard, it takes almost half a second for it to appear on the screen. The issue can also be described as a typing lag in Spyder.

This seems to have been triggered by the installation of Big Sur OS.

Spyder slow on Mac

After intensive googling, we stumbled upon this Github page detailing several possible solutions.

The one that worked for us was installing pyqt and pyqtwebengine. Basically, type the following commands in the terminal:

pip install PyQt5
pip install PyQtWebEngine

The above solution should be very safe since it is just installing Python packages.

Spyder lagging

The above solution helped to solve the troubling issue of Spyder lagging. Since Spyder uses Qt for its GUI, it is critical to keep the various Qt related packages updated / at the correct version. This may be the reason why installing PyQt5 and PyQtWebEngine helps to remove the lag in Spyder.

Spyder very slow

There seems to be many reasons, other than the above, that can result in Spyder being very slow. One tip that is useful, is never update to the latest version of Spyder, Mac OS, or Anaconda immediately once it is released, unless it is absolutely necessary. Most of the bugs appear in the newest releases, and can cause multiple problems including making Spyder very slow. By updating at a later date, most of the bugs would have been solved by then and it is a much safer approach.

Previously, updating to the latest Spyder 4.1.5 also caused several problems, including lag, slowness or even Spyder simply just crashing.

My All 2020 Mathematics A to Z: Wronskian

Great interesting post on Wronskian, which is widely used in the study of differential equations. Wronski is an eccentric genius, who was once forced to leave his post at the Marseille Observatory after his theories were dismissed as “grandiose rubbish”, according to Wikipedia.

nebusresearch

Today’s is another topic suggested by Mr Wu, author of the Singapore Maths Tuition blog. The Wronskian is named for Jzef Maria Hone-Wroński, a Polish mathematician, born in 1778. He served in General Tadeusz Kosciuszko’s army in the 1794 Kosciuszko Uprising. After being captured and forced to serve in the Russian army, he moved to France. He kicked around Western Europe and its mathematical and scientific circles. I’d like to say this was all creative and insightful, but, well. Wikipedia describes him trying to build a perpetual motion machine. Trying to square the circle (also impossible). Building a machine to predict the future. The St Andrews mathematical biography notes his writing a summary of “the general solution of the fifth degree [polynomial] equation”. This doesn’t exist.

Both sources, though, admit that for all that he got wrong, there were flashes of insight and brilliance in his work. The St Andrews…

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Tiger Brokers Referral Code: OAEMZD

Tiger Brokers Referral Code: OAEMZD

For the referral code, enter “OAEMZD” when prompted, or you may just click on the following Tiger Brokers Referral Link directly!

There are rewards (such as stock vouchers, commission-free trades, free market data) for using the referral code/link to sign up!

Tiger Brokers is an online broker listed on NASDAQ. It is backed by investors like Xiaomi and Jim Rogers. The main reason why people use Tiger Brokers, is to trade US Stocks such as Tesla and NIO online. You can also trade Hong Kong, Singapore, China, or Australian stocks using Tiger Brokers.

Tiger Brokers Commission Fees

One of the key benefits of Tiger Brokers is its low commission fees. It is highly competitive among all the brokers. For example the charges for US Stocks (as of the time of writing) is just 0.01 USD/share, for a minimum of 1.99 USD per trade. This is very low considering that banks usually charge upwards of USD$20 per trade. For example DBS Vickers charges a minimum of US$25.

Due to the low fees of Tiger Brokers, it is useful for people who are either trading frequently or trading in small amounts.

Tiger Brokers Singapore Review

Tiger Brokers is extremely fast for signing up. You can signup online within minutes, using Singpass to fill in personal details automatically. Personally, I signed up on a Sunday (non-working day), and the account was set up within a few hours on the same day. That is amazing speed. The speed of depositing funds (using FAST bank transfer) is also very fast (pun unintended), almost instantaneously.

The mobile app of Tiger Brokers also has an excellent design, and is extremely user friendly. The exchange rate given by Tiger Brokers is also highly competitive.

Tiger Brokers Minimum Deposit

There is no minimum deposit for Tiger Brokers, and there is also no minimum number of shares or lots you need to purchase. One can buy as low as just one single stock.

Is Tiger Brokers Safe?

This is the most frequently searched question. Firstly, Tiger Brokers is regulated by MAS (Monetary Authority of Singapore). Their MAS license can be found here.

Secondly, Tiger Brokers has the backing of Xiaomi, which is a major Chinese tech company making smartphones and other electronic devices.

Thirdly, Tiger Brokers is backed by Jim Rogers who is a very famous investor.

Fourthly, Tiger Brokers itself is listed on the NASDAQ stock exchange, under the code “TIGR”.

Lastly, for added security, there is 2-Factor Authentication option for Tiger Brokers. You can set it up during registration, by downloading another app called Tiger Token.

With any investing, there is always some risk, so do your research carefully before investing using any broker!

Tiger Broker Invitation Code / Promo Code

Once again, if you decide to sign up for Tiger Broker, do use the invitation code “OAEMZD” when prompted, or you may just click on the following Tiger Brokers Referral Link directly!


Disclaimer: The opinions on Tiger Brokers expressed in this blog post is for general informational purposes only and are not intended to provide specific advice or recommendations for any individual or on any specific security or investment product. It is only intended to provide information on Tiger Brokers Referral Code. In particular, this blog post is not a substitute for obtaining advice from a qualified investment advisor.


The below YouTube video is a beginner friendly introduction and review of Tiger Brokers.

What happens if you fail PSLE?

The PSLE (Primary School Leaving Examination) is a momentous event in the Singapore education system, where all Primary 6 (12 year old students) sit for the national exam that will determine their future secondary school (or even beyond, in the case of Integrated Programme).

PSLE is not everything

Despite the overall importance of PSLE, it has to be noted that PSLE is not everything. There are countless stories of late developers who later pursued successful careers, despite a bad PSLE Score.

Read about the miracle story of a student who scored 181 for PSLE (technically still a pass grade, but considered not so good), but later entered NUS Medicine, the most prestigious course in Singapore.

PSLE fail go where?

This seems to be a frequently asked question. There are still many options, one of them is NorthLight School, which was featured in the Straits Times. NorthLight School is a specialized school that takes in students who fail their PSLE. Each year, the intake of NorthLight School is around 200 students.

In 2009, Assumption Pathway School was also set up to take in students who fail PSLE, ensuring that students have a place to go to further their education.

After graduating from NorthLight School or Assumption Pathway School, around 45% of students go on to enter Institutes of Technical Education (ITE). After that, they can move on to Polytechnics.

What happens if you fail one subject in PSLE?

Unlike O levels, where there are quite severe consequences for failing critical subjects like ‘O’ level English or Maths, there is no penalty specifically for failing a certain PSLE subject.

According to experienced parents at Kiasuparents, the only problem of failing one subject in PSLE is that it will drag down the overall PSLE T-score. It has been estimated that failing one subject in PSLE would most likely cause the overall score to be below 200 (which can still enter many neighborhood secondary schools).

PSLE takes into account all 4 subjects. So even if you failed English or Chinese or any subject, it doesn’t matter. what matters is your combined score that determine whether you go express or normal academic.

Source: Kiasuparents

Hence, if the student does well for other subjects, it is not a big problem for failing one subject in PSLE, be it failing PSLE English, failing PSLE Chinese, or failing PSLE Math.

Bad PSLE results

It is actually quite rare to fail PSLE outright (around 98.4% of students pass and make it to secondary school). However, it is quite common to get a ‘bad’ PSLE results or a lower score than one expects.

When one gets a bad PSLE result, or fail PSLE (one or all subjects), the important thing for the student is not to get overly disheartened. It could well be the case that the student is a late developer, or that certain negative events out of the student’s control have impacted the student’s family, which resulted in the bad PSLE results.

Do check out this other inspirational story, of a student who scored 105 for PSLE, but later graduated from NUS with a Master of Architecture degree. The important thing is not PSLE grades (PSLE is not everything), but rather the character traits of a student such as being determined and hardworking.


Related posts:

PSLE 2020 Results and PSLE Cut Off Point 2020

The 2020 Primary School Leaving Examination (PSLE) results will be announced on 25 November 2020 (Wed). Given the ongoing COVID-19 situation, students will receive their results from their respective primary schools – in their individual classrooms instead of gathered as a cohort in the school hall – from 11.00am on 25 November 2020.

Source: MOE Website

PSLE 2020, 2021 Cut off point

The exact cut off point is not out yet, but based on previous years’ cut off points, we give some estimates of the PSLE 2020 Cut off point (for entry to secondary school in 2021).

IP schools cut-off point

The most popular schools are definitely the IP (Integrated Programme) schools, since they are the most prestigious, and also students get to skip the O Levels which is a major source of stress for the students and their parents.

IB schools are also very popular, since it is well known that the IB syllabus is easier to score than the ‘A’ levels.

‘S’ Tier IP Schools PSLE Cut off point

The ‘S’ Tier IP and IB schools are:

  • Hwa Chong Institution
  • Raffles Girls’ School (Secondary)
  • Methodist Girls’ School (Secondary)
  • Nanyang Girls’ High School
  • Raffles Institution

These are the top elite schools in Singapore. MGS (Methodist Girls’ School) COP has risen to this level in recent years, while HCI, RGS, RI, NYGH are the traditional top 4 secondary schools. In order to have a secure chance of entering these schools, the estimated COP or cut-off point is around 260, not considering affiliation. In certain years, a high 250s score such as 258 or 259 may also suffice, but it is quite risky.

‘A’ Tier Secondary School PSLE Cut-off point 2020

The ‘A’ Tier top secondary schools are:

  • Dunman High School (IP)
  • National Junior College (IP)
  • CHIJ St. Nicholas Girls’ School (IP)
  • Anglo-Chinese School (Independent) (IB)
  • Catholic High School (IP)
  • Cedar Girls’ Secondary School (IP)

These schools are very close to the ‘S’ Tier elite schools mentioned above. For these schools, traditionally, a score of around 255 and above is the usual COP or cut off point.

Note that some of the above good schools also have an ‘O’ level track whose COP (Cut-off point) is typically around 5 points lower, or around 250.


PSLE Express Cut off point 2020

Historically, the PSLE cut off point for express stream is around 188. For example, the following schools (express stream) have their PSLE cut-off point set at 188, for the 2020 secondary school intake:

  • Assumption English School
  • Bartley Secondary School
  • Bedok Green Secondary School
  • Bendemeer Secondary School
  • Boon Lay Secondary School
  • … and many more, all the way to Yuhua Secondary School and Yuying Secondary School.

Read our previous blog post on the frequently asked question of: Express vs Normal Academic for borderline PSLE score.


Money Saving “Lobang” (Tips):

My All 2020 Mathematics A to Z: Velocity

V for Velocity! Excellent exposition on velocity, and especially on phase space by Nebus Research blog.

nebusresearch

I’m happy to be back with long-form pieces. This week’s is another topic suggested by Mr Wu, of the Singapore Maths Tuition blog.

Color cartoon illustration of a coati in a beret and neckerchief, holding up a director's megaphone and looking over the Hollywood hills. The megaphone has the symbols + x (division obelus) and = on it. The Hollywood sign is, instead, the letters MATHEMATICS. In the background are spotlights, with several of them crossing so as to make the letters A and Z; one leg of the spotlights has 'TO' in it, so the art reads out, subtly, 'Mathematics A to Z'. Art by Thomas K Dye, creator of the web comics Projection Edge, Newshounds, Infinity Refugees, and Something Happens. He’s on Twitter as @projectionedge. You can get to read Projection Edge six months early by subscribing to his Patreon.

Velocity.

This is easy. The velocity is the first derivative of the position. First derivative with respect to time, if you must know. That hardly needed an extra week to write.

Yes, there’s more. There is always more. Velocity is important by itself. It’s also important for guiding us into new ideas. There are many. One idea is that it’s often the first good example of vectors. Many things can be vectors, as mathematicians see them. But the ones we think of most…

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What Are the Best Online Math Tutoring Websites?

What Are the Best Online Math Tutoring Websites?

Many people find math to be a difficult subject to excel in as compared to any other subject. However, it is not the case at all. Math only needs one to have a positive attitude, an excellent tutor, and lots of practice. It is quite an interesting subject to learn and proves to be handy on many different occasions.

Looking for a tutor online to help you figure out your math problems can be quite a daunting task. It is relatively easy to get the wrong service provider when you need to find help for your child. You need to check the best online math tutoring websites, which will help you find the best services online for your child or student. It is quite common to find a service provider who will not give you the value you desire online. It would help if you took into account reviews, which will guide you to make the best decision.

The Best Online Math Tutoring Websites

Here is a list of the best available math tutoring websites online:

1.     Princeton Review

The Princeton Review is recognized as one of the best platforms in the tutoring arena. The platform does not only provide tutoring services but also helps with the completion of the assignment. The service providers offer students different options during the signing up process. There is a one-time option available that grants students tutoring over a period of time and a monthly subscription.

For students who require regular tutoring, the monthly subscription costs $40 per hour, $80 per two hours, and $115 per three hours.  If you would like a more flexible schedule, you can opt to pay $350 for 10 hours or $950 for 30 hours.

2.     Chegg

This is an excellent site for math tutoring services as the services are available 24 hours. The student is automatically matched with the suitable instructor after keying in the problems they have.  The user can opt for a live class, text, or audio.

For an off-chat lesson, the class costs $11 and $20 for unlimited chat lessons for a month. For those who would like a video call subscription, they will pay $30 for a month. You should also check out Math videos on YouTube to help you learn more and faster.

3.     Learn To Be

This is an NGO based site that aims to provide equal opportunities to all students. Students fill in an application and detail the issues they need assistance with. Within seven days, the site will reach out to the student with a suitable tutor to arrange an online meeting.

This is a great service provider as it does not cost the student anything. A portion of the money donated to the site is responsible for helping students access algebra tutoring services or paying the tutors.

4.     Revolution Prep

It is quite famous for having tutors available for most of the day. The site uses highly interactive sessions to teach students math. They aim to make the subject fun to develop a positive attitude towards the subject. The sessions incorporate flashcards, posters, and other tools.

The tutoring services cost about $1398 for every 12 hours, and their group sessions cost $499 for 12 hours. Each group has four to eight people.

5.     Prodigy

This is an exceptional site if you prefer a one-on-one session with your tutor. The site offers different levels of maths by tutors who are suitable for your needs. The company’s goal is to enable each student to achieve their highest potential.

The site charges £30 per half an hour, and it’s discounted to $24 if you pay for three classes or more. You can also opt to pay for five classes at $120. During each first session, the tutor, parent/teacher, and the student discuss the service’s goals.

Conclusion

Math is quite a phenomenal subject to study that can lead to a very prospectus life. There are plenty of options available to choose from when it comes to studying the issue. There are online group classes, individual tutoring, and even in-person course. The available platforms, schedule, optimal studying style, and budget will influence which platform you will use. The list above will guide you in selecting the best service providers so you can be the math guru you were meant to be.

Free Exam Papers Secondary

Free Exam Papers Secondary 1, Secondary 2, Secondary 3 and Secondary 4

Secondary 1 , Sec 2 and Sec 3 papers are much harder to find as compared to Secondary 4 (O Level) exam papers, which can be found almost anywhere online. Even if you are willing to buy exam papers, you may not find any Secondary 1/2/3 papers for sale especially for rarer subjects like Chinese, History, Geography, English, etc.

Another type of exam papers that are very hard to find online are free Normal Academic (NA) exam papers. Most papers found online are Express exam papers, not Normal Academic. Normal Technical (NT) exam papers are even rarer.

On the other spectrum, free IP (Integrated Programme) exam papers are also hard to find online. Nonetheless, for most IP schools, the syllabus is not that different from Express (the order in which they teach the topics may be different). Hence, doing Express exam papers could also benefit students greatly.

There is a website named Smart Guppy which has free exam papers, and even personal notes compiled by top students from top schools like RGS. All notes and exam papers on Smart Guppy are free to every student, forever.

Free Exam Papers Secondary School

We have a list of Free Exam Papers on our Free Exam Papers main page. In addition, you may want to check out the site https://freetestpaper.com/, they have free exam papers from various secondary schools (login is required to download).

The websites mentioned above has exam papers such as:

  • Sec 1 Express Science SA2
  • Secondary 1 Express Maths
  • Secondary 1 Normal Academic Maths
  • Secondary 2 Express Science
  • Secondary 3 Express Chemistry
  • Secondary 3 Express Physics
  • Secondary 4 A Maths
  • Secondary 4 E Maths
  • and more free exam papers.

SG free exam papers

In general, you should always try to search for SG (Singapore) free exam papers before attempting to buy. Especially for Secondary 4 exam papers, they are the easiest to find and can be found easily by simple Googling. For other subjects, you may try to use some advanced Google tips and techniques in order to search for free exam papers.

Singapore exam papers are also widely favored by parents in Hongkong (HK), Philippines, Indonesia, and Malaysia. In Hongkong, Singapore Secondary Exam Papers are suitable for Junior Secondary 1 to 3 (Form 1 to 3) students. In Malaysia, our SG Secondary Exam Papers are suitable for students in Form 1 to Form 5 (ages 12 to 17).

Free Printable Exam Papers Singapore

As mentioned in our above paragraphs, you may wish to check out our main Free Exam Paper page, as well as sites like https://freetestpaper.com/. The exam papers are mostly in PDF format, and sometimes in Word Doc format, which are all printable. It is also common to print exam papers at a smaller size of 2 pages per sheet of paper in order to save paper.

Where to buy exam papers in Singapore

As a last resort, if you cannot find free exam papers, you may wish to visit Bras Basah Complex which is the traditional place to buy hard copy exam papers. There are also various sites online which sells exam papers, but only in soft copy.

Another place to buy authentic exam papers is through Carousell, where graduating students may sometimes sell their exam papers and notes since they have no use for it anyway.

For official O Level Cambridge exam papers, the place to buy them is at Popular bookstores, where they are often sold in the form of Ten Year Series. If you wish to find cheaper or older O Level exam papers, again the place to be is Bras Basah Complex, where there are many second hand bookstores selling such exam papers.

Function Continuous =>? Differentiable

Math Online Tom Circle

【高等数学】变限积分与变量分离

This young Chinese Math student is quite rigorous :

Given f(x) CONTINOUS function,
Is it wrong to f'(x) right away?

https://m.toutiaoimg.cn/a6888102052447126028/?app=news_article&is_hit_share_recommend=0&tt_from=android_share&utm_medium=toutiao_android&utm_campaign=client_share

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Differential Theorem

Math Online Tom Circle

Differential Theorem

If f differentiable at point a => f continuous at point a

Converse not true !

‘Differentiability’ stronger than ‘Continuity’
Are all Continuous functions Differentiable ? False!
Counter-example (by Weierstrass):

$Latex f(x)=Sigma{b^n}cos(a^npi x)$ n ∈[0,8], a= odd number, b∈[0,1], ab > 1+3Π/2

f(x) Continuous everywhere (cosine), but non-differentiable everywhere!
Note: Weierstrass Function is the first known fractal. (e.g. Snowflake Koch’s curve).

Plot of Weierstrass Function Plot of Weierstrass Function (Photo credit: Wikipedia)

Note: What it means a curve (function) is :
1. Continuous = not broken curve
2. Differentiable = no pointed ‘V‘ or ‘W‘ shape curve

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吴军《数学之美》:数学模型帮您实现认知跨越

20CE 中学数学教育 (陈建功)

Math Online Tom Circle

20世纪(1950s -1970s)的中国数学教育改革是迎合WW2 战后工业化, 影响我们中学数学 Secondary School Math (13-18 岁) 。

21世纪 (2000s – 2030s) 迎合的是 工业 4.0 (AI, Big Data, IoT, Fintech… ),中学数学改革 是什么呢?

陈建功 (1893-1971) 和 师弟 苏步青是二战前 留学日本派的数学教育家 (微分几何),建立浙江大学和复旦大学数学系 – 与 陈省身 的 留法/德/美 “南开”派,华罗庚的留英/俄 “清华” 派 三派鼎立,融合成特有的 中国数学派 。

https://m.toutiaocdn.com/group/6771961322671178247/?app=news_article_lite&timestamp=1576803223&req_id=201912200853420100140400930DC57A0B&group_id=6771961322671178247

这三本数学(中三/中四)书是我们 70s年代 新加坡华文中学的课本 (文言文) :

Note [*]: Henry Fine was the Founder of the Princeton Institute of Advanced Study (IAS) , who hired the first professor  – Albert Einstein.

]This 《葛氏平面三角》(Granville Trigonometry) text book was arcane and translated in ‘old’ Chinese (文言文).

德国 Gottingen 学派 Felix Klein引入 Function (函数) 进 中学(Secondary 3)数学主题 (main theme) :

Jewish / French Math vs German Math

The French “Bourbaki” School of Abstract Math (based on Set Theory as Foundation of ALL Math) influenced the…

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日本战后数学教育家 远山启

Math Online Tom Circle

远山启:用数学照亮人性与自由

(1909-1979)

日本战后的"新"数学:把抽象化转成 平易化。出了一群 Fields Medalists, 数学教育家 (这位 远山启,Shimura, ), 科普作家 结城浩 (《Math Girls》Series : Galois Theory, Fermat’s Last Theorem, etc. )…

https://m.toutiaocdn.com/i6895034925657883144/?app=news_article&timestamp=1605514504&use_new_style=1&req_id=2020111616150301020405504612025E05&group_id=6895034925657883144&tt_from=android_share&utm_medium=toutiao_android&utm_campaign=client_share

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Neon Tetra Disease Treatment (Melafix)

Neon Tetra Disease is a mysterious disease that strikes mainly neon tetras, but other fishes are also susceptible to it. The online opinion is that there is no cure, some even suggest euthanizing the poor tetra to avoid it spreading.

Neon Tetra Disease Signs

The signs of neon tetra disease include some of the following classic symptoms:

  • Loss of color in a patch of skin
  • Fin rot
  • Curved spine in advanced cases

Our neon tetra exhibited two of the classic signs (white patch and loss of color near the head), and fin rot near the tail. For more pictures and graphics of the symptoms, see the video below.

Neon Tetra Disease Cure (Melafix?)

We seem to have stumbled upon a cure for neon tetra disease using Melafix. Melafix is a herbal fish medicine based on tea tree oil, and is targeted at bacterial infections of fish.

After one dose of Melafix, and over 9 days, our neon tetra has shown a dramatic improvement (as seen in video below). The white patch of loss of color is gone, and the fin rot near the tail is gone as well. In addition, the fin tissue near the tail has grown back to normal levels.


API Aquarium Pharmaceuticals 11J Melafix, 16 oz. (11J)

In the video below, our neon tetra was cured (after around 1 week) from Neon Tetra Disease, after dosing Melafix.

Neon Tetra Disease Cause

As mentioned before, there is almost no information on neon tetra disease, even though it is a very common disease of neon tetras. Some say that it is caused by a Microsporidian parasite called Pleistophora hyphessobryconis.

There is also a closely related disease called “False Neon Tetra Disease”, which is caused by bacteria. The symptoms are so close that it is impossible to tell apart the two diseases without a microscope in a laboratory.

According to famous fish keeper Cory from Aquarium Co-op, Neon Tetra Disease is caused by Mycobacterium, which also causes fish tuberculosis.

Neon Tetra Disease Cure

Based on our experience, Melafix certainly seemed to cure the Neon Tetra Disease. Then again, theoretically Melafix works against bacterial diseases but not parasitical diseases. Hence, it may work for the cases of Neon Tetra Disease which are caused by bacteria, but not for those that are caused by parasites.

Uncle Roger Data Scientist

Uncle Roger (real name Nigel Ng) is a very popular YouTube comedian, who shot to fame with his “egg fried rice” critique videos. Not many people know that Uncle Roger was actually a bona fide Data Scientist, who graduated from Northwestern University.

His classic viral video is the video critiquing BBC’s egg fried rice recipe. It has struck a chord with many Asians internationally, since the way BBC prepares egg fried rice is totally “wrong”, according to the traditional way fried rice is made in Asia.

Uncle Roger Rice Video

The below video is the classic original “egg fried rice” video that propelled Uncle Roger to stardom on YouTube. As of November 2020, this video has hit 18 million views, which is considered a lot on YouTube. Based on an estimate of USD$1-$5 CPM, this video alone has netted Uncle Roger USD$18,000 to $90,000.

As a continuation, Uncle Roger has also made various videos related to egg fried rice, for example the video featuring Gordon Ramsay.

Another popular video is the one featuring Jamie Oliver.

Nigel Ng (Uncle Roger) Data Scientist

What is not known by many is that Uncle Roger (aka Nigel Ng) used to be a data scientist, dubbed the “sexiest job of the 21st Century”.  Nigel Ng first studied at Chong Hwa Independent High School, Kuala Lumpur, and then moved to the US to pursue his studies at Northwestern University. He then relocated to London to work as a data scientist at various companies, before transitioning to comedy full time in 2019.

Uncle Roger (Nigel Ng) even has a GitHub page featuring the code he wrote: https://github.com/nigeljyng.  From his GitHub code, we can see that he works with Deep Learning using Keras.

Uncle Roger is actually quite young, his age is only 29 years old, and he is born on 15 March 1991.

Uncle Roger’s GitHub page, where he shares his data scientist code.

Uncle Roger Wife

Uncle Roger’s ex-wife is a fictional character named “Aunty Helen”. Not much is known about “Aunty Helen”, though there is a fan-made horror Halloween short movie featuring Aunty Helen.

Uncle Roger Fuiyoh and Haiya

Uncle Roger’s favorite slang is “Fuiyoh” and “Haiya”. “Fuiyoh” appears to be a Manglish (Malaysian English) slang word, spelled as “Fuyoh” on Wikipedia. It means exclamation of amazement / wonder / marvel, basically same meaning as “Wow!” or “Awesome!”.

“Haiya” also appears to be a Manglish (Malaysian English) word, spelled as “Aiya” on Wikipedia. It is a word to express surprise or dismay (more of dismay).

Uncle Roger Net Worth and Social Blade

According to Social Blade, Uncle Roger earns a whopping USD $77.5K – $1.2M based on his YouTube ad revenue alone. The range is huge due to fluctuations in YouTube CPM (cost per thousand views) based on region and other factors. But even the lower range USD $77.5k is a very high amount for a new channel like Uncle Roger (mrnigelng).

This shows that humor, or comedy, has timeless appeal. Even in the ancient times, or the futuristic era, laughter is always the best medicine.

Jinx Wild Rift Build

Jinx Wild Rift Guide

Jinx is the “mascot” of Wild Rift, which is the recent mobile version of League of Legends. Jinx is a worthy hero to play because of the following reasons:

  • Excellent ADC (Attack Damage Carry). Very high AOE and single damage output.
  • High Skill Cap. It actually requires a bit of skill to use Jinx, especially in terms of positioning and not dying. The art of switching between the two guns also requires skill.

League of Legends Jinx Wild Rift Build

The default build “AOE Marksman” for Jinx is actually quite good. The items you should get are:

  • Infinity Edge. The damage, and more importantly Crit, is especially important for Jinx. The increased 230% Crit damage scales even more under the attack bonus of Fishbones, the Rocket Launcher.
  • Runaan’s Hurricane. This item further increases Crit chance and Attack Speed, and strike 2 additional nearby enemies. This helps you to farm better in the initial stages, and deal massive AOE damage in the later stages.
  • Quicksilver Sash. This is important as Jinx is very fragile when under crowd-control effects. There is also some lifesteal worked into this item, which is helpful as in this build Jinx has no early game lifesteal.
  • Rapid Firecannon. Increases attack speed, crit chance further, as well as add even more range to Jinx.
  • Bloodthirster. Great for lifesteal and damage.
  • Last Whisper. Good for more armor penetration if there are many tanks in the game. Otherwise, you may wish to get Guardian Angel instead, for more survivability.

10 Kills, 0 Deaths, 3 Assists and MVP with Jinx in Wild Rift.

Jinx Wild Rift Role

Officially, Jinx is supposed to play as a Marksman (together with a support hero) in the Dragon lane (Duo lane).

If you are the only ranged hero, Jinx can also go in the Mid lane.

In a team fight, your role is to stand at the back, stay alive while dealing as much damage as possible with your guns.

Jinx Wild Rift Runes

The two preset rune builds for Jinx are quite good.

The default (Set 1) of runes are: Conqueror, Triumph, Loyalty and Sweet Tooth.

This set is good for maximizing damage (Conqueror can stack up to 30 Attack Damage, which is as good as half an Infinity Edge). Triumph also helps you to deal more damage to low health enemies to secure those kills.

The second default set of runes for Jinx are: Fleet Footwork, Gathering Storm, Spirit Walker, and Sweet Tooth.

Fleet footwork helps with mobility, and also the healing effect is good in the early game, especially in builds where Jinx does not have early lifesteal.

Gathering Storm builds up AD more and more, in preparation for the late game. The slow resistance for Spirit Walker is also great for a fragile hero like Jinx.

Jinx Wild Rift Skills

The way to learn Jinx’s skills is very easy to remember.

Just prioritize: Switcheroo>Zap>Flame Chompers, and learn your ultimate Super Mega Death Rocket whenever possible.

The most useful skill is surely Switcheroo. Zap is hard to hit, since it is blocked by any minions in front of the champion. Flame Chompers is only for your last resort escaping, or for punishing enemies who push too near to the turret (by throwing it behind them and prevent them from retreating).

Jinx Wild Rift Summoner spell

The meta seems to be to pick Heal and Flash. Basically, these two skills are the best to help Jinx escape and avoid dying.

My All 2020 Mathematics A to Z: Unitary Matrix

A great exposition (as always) of Unitary Matrices by Nebus Research Blog.

nebusresearch

I assume that last week I disappointed Mr Wu, of the Singapore Maths Tuition blog, last week when I passed on a topic he suggested to unintentionally rewrite a good enough essay. I hope to make it up this week with a piece of linear algebra.

Color cartoon illustration of a coati in a beret and neckerchief, holding up a director's megaphone and looking over the Hollywood hills. The megaphone has the symbols + x (division obelus) and = on it. The Hollywood sign is, instead, the letters MATHEMATICS. In the background are spotlights, with several of them crossing so as to make the letters A and Z; one leg of the spotlights has 'TO' in it, so the art reads out, subtly, 'Mathematics A to Z'. Art by Thomas K Dye, creator of the web comics Projection Edge, Newshounds, Infinity Refugees, and Something Happens. He’s on Twitter as @projectionedge. You can get to read Projection Edge six months early by subscribing to his Patreon.

Unitary Matrix.

A Unitary Matrix — note the article; there is not a singular the Unitary Matrix — starts with a matrix. This is an ordered collection of scalars. The scalars we call elements. I can’t think of a time I ever saw a matrix represented except as a rectangular grid of elements, or as a capital letter for the name…

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Entering Good IP Schools is now Virtually Impossible for Students scoring below 65 for Chinese (MT)

Score less than 65 marks for Chinese (Mother Tongue), and it is Impossible to Enter Good IP Schools under the new system

This is a totally new era, where all previous PSLE strategies are outdated. Do share this article with your relatives/friends, where we show (using official evidence), that students scoring below 65 for Chinese (Mother Tongue) have virtually zero chance of entering good IP schools.

Since language (especially Mother Tongue) is the hardest subject to improve within a short period of time, students starting from as early as Primary 1 have to take note and adjust to the new PSLE scoring system. The Achilles heel for many students is actually Chinese language (or Mother Tongue), since it is very common for the entire family to be speaking English at home, at work, and with friends.

Our source of official evidence is the Straits Times, where it is indicated that the Official MOE Indicative AL COP range for 2019 PSLE for Express [Integrated Programme (IP)] is 6-9 points. For independent schools (which form the bulk of the best IP schools), the cut off point is 6-8. The same information can be found on Today Online, and Channel News Asia.

Indicative AL COP range for 2019 PSLE
Course Government and Government-aided schools Autonomous schools Independent schools
Express Integrated Programme (IP) 7–9 7–9 6–8
Achievement level (AL) Marks
1 90 and above
2 85-89
3 80-84
4 75-79
5 65-74
6 45-64
7 20-44
8 Below 20

Score under New PSLE System (for child weak in Mother Tongue)

Let us suppose the child scores:

  • >90 for English (AL 1)
  • >90 for Mathematics (AL 1)
  • >90 for Science (AL 1)
  • <65 for Chinese/ Mother Tongue (AL 6)

His/her total PSLE Score will be 1+1+1+6=9, which is not good enough to enter Independent IP Schools (requirement of 6-8 points). Independent IP Schools include schools like Raffles Institution, Nanyang Girls’ High School, RGS, HCI, and more. From common sense, the top IP schools’ COP is in fact likely to be on the lower end closer to 6 (or even lower?) rather than 8.

Score under Old PSLE System (for child weak in Mother Tongue)

Under the old PSLE system, the child’s score is likely good enough to enter even the best of IP schools:

  • >90 for English (e.g. 91)
  • >90 for Mathematics (e.g. 98)
  • >90 for Science (e.g. 95)
  • <65 for Chinese/ Mother Tongue (e.g. 64)

Estimated PSLE Score = (91+98+95+64)/4 x 3 = 261

The actual old PSLE T-score formula is slightly different (depends on bell curve and relative performance), but nevertheless, the estimated PSLE score of 261 is good enough to enter the best of IP schools like Raffles Girls’ School (RGS), RI, HCI. In fact, it is common knowledge that in the past, many students relatively weak in Chinese managed to enter RI and RGS due to their excellent scores in other subjects. Students in NYGH and HCI tend to have better grasp and mastery of the Chinese language.


A similar effect for students weak only in Math

The above effect is not unique to Chinese/ Mother Tongue. There are many students who excel in languages (English, Chinese), and Science, but are weak in Math for some reason or another.

The exact analysis also applies in this scenario, unfortunately. Basically, in order to enter top IP schools, no subject can be below 65 marks no matter how excellent the other subjects are.


See also:

Best Majors in Singapore

Update: To ensure that our list of best majors in Singapore is always updated, we have a poll below to reflect the updated views of readers. Do vote and check out the latest results!

Poll on the Best Major in Singapore:

Why is there a need to consider the Best Majors in Singapore?

There is an old Chinese proverb, saying that “The greatest fear of a man is to choose the wrong occupation.”. (男怕入错行,女怕嫁错郎.) Despite being thousands of years old, this proverb still holds true in the 21st century, even in advanced regions like the USA, Europe, and Singapore.

Basically, the choice of major directly or indirectly determines the future occupation or career path of a student.

Ancient Chinese Proverb:
“The greatest fear of man is getting into the wrong occupation. The greatest fear of woman is marrying the wrong man.”

(The first part still holds true, the second part may be outdated?)

男怕入错行,女怕嫁错郎

Best Majors in Singapore

There are many sources on the best majors in university or college, but focused on other countries such as the USA. Do take a look to see the general trend, but there are several majors that are “uniquely” good or bad in Singapore.

Best Majors in Singapore (Tier List)

Firstly, the best major in a sense is based on one’s interest and passion. For example, if one has totally zero interest in being a medical doctor or healing patients, it does not make sense going into the Medicine major in university. One may even burn out while attempting to do so.

That being said, if you have passion for multiple subjects, but have problem narrowing it down to a single major, it may be good to look at which one has the best prospects.

S Tier Majors in Singapore

  • Medicine
  • Dentistry

Based on the ageless theory of demand and supply, medicine and dentistry are bound to be the best for years to come. Demand-wise, humans are bound to get sick, and even more so with an aging population in Singapore. Supply-wise, the supply of doctors and dentists are strictly controlled by limiting the yearly cohort of medical students. In general, there will always be a shortage (or just enough), and never a surplus of doctors/dentists in Singapore.

The Singapore Medical Council (SMC) is a powerful organization, with the power to advice the Ministry of Health to cut overseas medical schools approved for practice in Singapore, for example. This helps to control the supply of doctors in Singapore.

Dentistry, though not as prestigious as medicine, actually have good earning potential as most visits to dentists are surgeries which cost more. From an official Youth.SG government website, the salary range is  $5,000 to $7,000 per month for fresh dentistry graduates.

In general, both medicine and dentistry are always among the highest paying degrees in Singapore. According to anecdotes online, there are people who are even willing to sell their house in order to send their child to medical school overseas (e.g. Australia); such is the attractiveness of the Medicine major in Singapore.

A Tier Majors in Singapore

  • Law
  • Computer Science (or other computer related majors)
  • Architecture
  • Pharmacy

Law is one of the highest paying degrees in Singapore, in fact potentially even more so than medicine. However, it is also known that being a lawyer is an extremely high stress occupation, and there is a high attrition rate because of that. In Singapore, 3 out of 4 (75%) local lawyers will leave practice within 10 years of commencing, according to the Law Society. That is why it is only placed at ‘A’ tier instead of ‘S’ tier.

For Computer Science, there is no need to explain, it is needed in all companies nowadays in the shift to high tech. Big data, data science, machine learning, is the hottest thing now. The only reason why computing science is only ‘A’ tier instead of ‘S’ tier is because there is no control on the supply of computer engineers/scientists in Singapore. Theoretically, it could happen that there can be more and more computer engineers/ data scientists trained (including from overseas) until the entire field is over-saturated. Also, from history, the technological sector tend to experience things like “AI winter” or “Dot-com bubble”.

Computer Science (and data science) is also recently one of the highest paying degrees in Singapore, with good job prospects. It is also quite compatible with the current “work from home” climate across the globe, it is unlikely to be disrupted by disease epidemics such as COVID-19 or future viruses.

For architecture, the pay is good and attracts top students. And also, even though Singapore is a small country with limited land, there always seems to be construction projects going on here and there all the time. For pharmacy, due to the laws, there is a constant demand for pharmacists required to dispense medication (for example every Guardian/Watson pharmacy needs one) and other duties. Hence, unless the laws regarding medicine change, there is always a constant demand for pharmacists.

B Tier Majors in Singapore

Note that “B Tier” still means good, while “A Tier” means very good!

  • Engineering (except computing)
  • Science (Physical science or hard science majors such as: Physics, Mathematics, Chemistry.)
  • Many others … (Vote in the poll!)

For engineering, this may be a surprise to foreign readers because in the USA, engineers are paid very well. According to the U.S. Bureau of Labor Statistics (BLS) engineers in America have a median annual wage of USD $91,010, which is  around SDG $122k.

In Singapore, engineering majors are “B” tier since they are still good in the sense that you could still most likely find a job related to what you study. Why they are not “A” tier is again due to the theory of demand and supply. The demand is not as high as say Computer Science, since Singapore is already slowly transitioning out of the manufacturing industry (e.g. do you see any big factories in Singapore?) For supply, again the number of engineers are not controlled, when there is a huge number of engineers (either trained or imported), wages will get suppressed.

For Science degrees (especially physical sciences like Physics, Chemistry, Mathematics), it is a solid “B” tier because the student actually learns useful and real quantitative skills that can be transferred to other domains. For example, it is very possible for physics or mathematics majors to transition to the finance industry after they graduate. Also, teaching in schools (public or private) is a valid option for Science majors.

Useless Degrees in Singapore

Many people actually search for “useless degrees in Singapore”, presumably to avoid them?

There is actually no such thing as a “useless degree”, since every degree from a recognized institution in Singapore does impart knowledge to the student. In the worst case scenario, they are still regarded as a general degree which will be recognized in the civil service or most major companies.

There is a notable mention to “Life Science” (Biology) degrees in Singapore though. Basically, the “Life Science” undergraduate degree in Singapore is widely regarded as not sufficient in itself to get a Life Science related job in Singapore, further degrees such as masters or PhD may most likely be required.

seriously it (Life Science Prospects in Singapore) is not good.

my batch people who went into life sciences are not doing well.

most have changed industries.

jobs are still few and not well paying.

i receive quite a lot of resumes from them, trying to do a mid career switch to engineering.

Source: Reddit

 

I was a life science grad specializing in biomed. Graduated in 2015

I would say out of my circle of friends, only one person went on to do research for a year for his masters. Everyone else went to do other things that were not life science related.

Source: Reddit

 

hi!! to be vv honest, life sci is q a bad place to be in rn (unless u are intending to do the duke-nus grad med track; which again, entry is vv competitive). i have friends who’re in life sci and they’re all desperate for phd bc degree really means nothing; they constantly joke about degree-holders being test-tube washers lmao. in nus faculty of sci, the dean’s list is often filled w ppl from life sci whose CAP are v high. that’s bc life sci mods are generally easier than other sci courses, and the cohort is bigger (so more bellcurve tankers). and when a degree is relatively easy, u can imagine it’s prospects

Source: Reddit

An excellent world-class post on why the Life Science / biology hype died down worldwide, not just in Singapore:

It died down worldwide imo. There was a lot of hype about genetics and biotech in the 90’s, but after the Human Genome Project was completed in the early 00’s everyone realised that there are several more levels between genes and phenotype, e.g. epigenetics, mRNA regulation, proteomics, nutrition, lifestyle choices, pathogens, behaviour… And we can’t even be certain that there aren’t more levels which we are currently unable to perceive.

Despite the predictions of futurists in the 90’s, we still can’t fully explain the pathways that lead to cancer or Alzheimer’s or heart disease, let alone fully formulate rational treatments for them. And forget about designing artificial life from scratch.

There was a mountain that science hoped El Dorado lay hidden behind, but after climbing it science found only a bit of gold, and 5 higher mountains in front. It’s just the way the universe is really; nobody could have known that the 5 mountains existed before climbing the first.

Source: Reddit

丘成桐:我研究数学的经验

Math Online Tom Circle

丘成桐:我研究数学的经验

路漫漫其修远兮,吾将上下而求索‘ – 屈原 《离骚》(340BC)

丘成桐:我研究数学的经验

‘路漫漫其修远兮,吾将上下而求索‘ – 屈原 《离骚》(340BC)

第一个华人拿 Fields Medal, 而且世界上少数人27岁得奖,ST Yau (岳 – 山=丘) 的成功不是偶然:

  1. 在香港中文大学遇到美国人年轻数学讲师,引导他进"数学之大门",并推荐他去美国拜他的教授 陈省身 ( 微分几何 的 “Gauss II” 宗师) 读PhD。
  2. 14岁前父亲给他打下古文学/哲学的基础,”真/善/美” 艺术的直觉 Intuition, 对高深数学理解有大帮助。
  3. “Read directly from Masters” (Abel 说的) . 读经典原著。
  4. 多听别人的讲座,多看 journal papers. “抛砖引玉”,“他山之石可以攻玉”。Get inspiration from others.
  5. 高中/ undergrad 基础功夫要打好,Algebra, Analysis, Geometry, Physics ,都要 “懂” (只有多作习题才知道)。

https://m.toutiaocdn.com/i6888616174393754123/?app=news_article&timestamp=1603895425&use_new_style=1&req_id=20201028223025010202055140190F8C1C&group_id=6888616174393754123&tt_from=android_share&utm_medium=toutiao_android&utm_campaign=client_share

https://m.toutiaocdn.com/i6888616174393754123/?app=news_article&timestamp=1603895425&use_new_style=1&req_id=20201028223025010202055140190F8C1C&group_id=6888616174393754123&tt_from=android_share&utm_medium=toutiao_android&utm_campaign=client_share

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Guardian Promotion Singapore (40% Discount)

Click on the link to enter the Guardian website, where there is up to 40% discount off selected items!

Official URL for Guardian website: Guardian.com.sg

There are quite a lot of good deals on the Guardian website, that may not be found in Guardian physical stores. The reason is due to the limitations in size of Guardian physical stores, they can’t carry all possible products whereas the Guardian website can.

For example, some of the promotions that are ongoing now are:

  • Up to 40% off vitamins and supplements
  • Buy 1 get 1 free for Facial Masks and Cleansers
  • 20% off selected Skincare products
  • 2 For Deals, up to 400 products
  • Free Portable Juice Blender, with $100 spent on health products

Guardian Promo Code

I don’t think Guardian has a Promo Code, and even if there is, I don’t think the Promo Code can stack with the online discounts from the Guardian website.

Guardian Passion Card

The member card for Guardian is the PAssion card, similar for Giant supermarkets. Other cards that are beneficial at Guardian include the “UOB One Credit Card“, and “Golden Senior Card“, which is for adults aged 50 and above.

When You Speak They March: Alumni Network Rules of Engagement

When You Speak They March: Alumni Network Rules of Engagement

Like schools, universities and other institutions, alumni play a pivotal role in the success of non-profits and foundations.

Organizations quickly realize the potential of keeping past participants connected and aware of institutional activities. In that context, these bodies need rules of engagement, modes of engagement, and ways of measuring impact.

Provide practical value in alumni engagement

Alumni are defined within the premises of shared identity or experience. But these factors may not be enough to keep your members engaged forever after the event or outreach is done. Consider creating practical value for members in exchange for continued association with the alumni.

Modern-day alumni expect a unique, balanced value proposition when they share their time, donations, skills, and attention. You can meet them halfway with support platforms for networking, referrals, or skills development.

The derived value from the engagement will strengthen the shared identity and fuel the desire for continued fellowship in the long run.

Implement real-time engagement

The desire to be part of and participate in your nonprofit’s activities can quickly wane in the face of limited interaction. Value creation is not a solve-it-all solution. For communities to realize the benefits of alumni network, modes of engagement must be set and optimized.

Traditional alumni interactions rely on face to face meetings. These have the advantage of the personal touch but many limitations in time and space.

With the growth of digital technologies, virtual alumni interactions have proven effective in driving more connections and opportunities for members.

In the age of social distancing, adopting a virtual alumni engagement platform is the wisest thing to do to keep the connection going.

The right alumni engagement digital platform should save your time and boost your impact. In the traditional sense, managing and communicating with all members can be hectic and time-consuming.

A dedicated digital platform makes it possible to harmonize data, personalize messages, and keep the conversation going so that you don’t find yourself without donors in your next campaign.

Provide tangible results and impact assessment

Motivated and goal-oriented alumni networks will have a shared desire to assess their achievements. Without the data or accurate data, you risk snuffing out their passion for making positive change.

The best non-profits find ways to quantify results by establishing metrics for measuring outcomes throughout an outreach.

Historically, quantifying results has been difficult for many nonprofits. Many therefore resort to reporting inputs as outputs like the number of new volunteers or awards won. For sustained donor engagement and participation, you will need data on real, measurable outcomes.

Embrace data and relevance

The right digital platform can help you analyze impact against your set metrics. That way, you can confidently show your constituents what their time and money are achieving regarding your cause. Attaining that accurate reporting requires optimal data harvesting and analysis.

The right data can further help to keep engagement relevant. As your network grows, generalized messaging might cease to be effective.

You will probably need a segmentation algorithm in your communication to keep the engagement personal, relevant, and meaningful to the individual.

The best alumni engagement platform helps you reach and retain constituents through strong and personalized messaging.

You can seamlessly and expediently gather ideas from each member to make them feel involved. You can break down data and find out which supporters need a higher level of engagement.

It is impossible to sustain alumni networks without technology by your side. The best virtual alumni platform makes your connections easy and impactful.

如何学数学 How to Learn Math

Math Online Tom Circle

林群院士:

https://m.toutiaoimg.com/group/6783678419574981120/?app=news_article_lite&timestamp=1579537218&req_id=2020012100201801001404702306D0DBEB&group_id=6783678419574981120

道理 (X 定理)
发明 (X 证明)

林群院士 评学校数学教法颠倒:不教 "道理"(Intuition ) 只教 定理,不教 “发明” 的背景(Discovery background)只教”证明” (Proof) 。

他的数学教法 强调 “all maths go back to the fundamentals.”

He has redefined the abstract “Cauchy ε-δ definition of a limit” in terms of only elementary maths (trigonometry, inequality, gradient).

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化学:金属活动性顺序表

Math Online Tom Circle

中三化学刘老师教我们背这个金属活动性顺序表, 排前面的元素比排后面的活跃,写化学反应方程式时,非常有用。基本上整个 Physcial Chemistry 就是浓缩在这表里,朗诵上口,终身难忘,50年后还记得!- 化学靠记忆,用中文学化学最方便 。(我在法国精英大学 Classe Preparatoire 念化学,打败全班法国人得第一名,中学用中文读化学的基础, 功不可没。)

铅 (氢)

K Na Ca Mg Al Zn Fe Sn Pb (H)

[嫁 倩 (轻)]

Cu Hg Ag Pt Au

[统 金]

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数学历史大纲by丘成桐

Math Online Tom Circle

28 Dec 2019 @中国科学技术大学研究生院

Key Points:

  1. 中国数学从古到今只注重计算和解题没有提出自己的问题。 (这是 科举 /Concours / 高考 / IMO Math Olympiad 的心态mindset)。大问题: eg. 法国人 Group Symmetry, Cauchy’s Limit, Poincare Topology, 英国Newton / Leibniz’s Calculus, Russell’s Logic, 德国 Cantor’s Set Theory, Infinity,…
  2. 清朝数学家花200+年 考古研究古代中国数学 (《九章算数》… ), 这时西方文艺复兴开始搞近代数学 (意大利 虚数 i, Fermat 数论,Descartes 解析几何,Pascal 或然率, Newton Calculus,… ) 。中国数学从此落后西方。
  3. 要读数学历史,尤其是17/18CE Fermat/Newton 之后的近代数学史, 才有宏观思想,继承他们的精神,从而开拓新的领域 (eg. AI 数学: HoTT = Homotopy Type Theory?)
    https://m.toutiaoimg.cn/a6864500678341952013/?app=news_article_lite&is_hit_share_recommend=0
  4. 他选出 41位 17/18世纪之后至今的伟大数学家, 属于开创新领域的宗师:第一个是 Fermat, 第二个是 Newton…. GALOIS, ABEL,… LIE, KLEIN, HILBERT, Minkowski, Riemann, Euler, Gauss, Cauchy, POINCARÉ, Noether, Weyl, E. Cartan, André Weil, 陈省身,丘成桐, Von Neumann, Turing, … [没有 Bertrand Russell, Ramanujian, Hardy, Terence Tao,… ? ]
  5. 提到重要的数学:Lie Group, Lie Algebra, Guage Theory, Homology, Co-homology, Homotopy, Riemann Geometry, Zeta Function, etc.
  6. 他将出书写这些数学家的历史。
  7. [Q&A 1] : 当明白数学来龙去脉,才知道历史,看未来发展。司马迁写《史记》,司马光 写《资治通鉴》的目的:以古鉴今!
  8. [Q&A 2] : 数学读得越多,一切数学就变得简单。(这跟学厨艺,钢琴等一样,起初一切都难,但练习煮/弹得多,就越来越容易上手,而且能够创新,举一反三)。40年前在法国大学读抽象代数(Abstract Algebra) 满头雾水,考试心生恐惧。15年前温习并读其他更多的数学书, 顿然开窍,现在爱不释手。

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《Galois Theory》 – Cousera by Ecole Normale Supérieure

Math Online Tom Circle

Complete Free COUSERA Course 《Galois Theory》 (French) from Ecole Normale Supérieure (ENS 巴黎师范) , the university which kicked out Galois as a student in1830, but apologized to him 150 years later.

Today ENS ranked top 3 globally (after Harvard, Princeton IAS) in Math research & education, producing 1/3 of the world’s Fields Medalists by a single university.

For English Text translation (choose Google translate)

https://www.coursera.org/learn/theorie-de-galois

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PolicyPal Referral Code: MATH88 (Free Fairprice Voucher!)

Sign up for PolicyPal with referral code MATH88 to get PolicyPal credits

Don’t have an account with PolicyPal yet? You’ll need one to start earning credits! Register with referral code MATH88 to receive $10 credits.

PolicyPal is a new insurance portal that has various insurance policies. One of the famous ones is “Gigantiq”, which gives an impressive 2% interest per annum.

Once you sign up with PolicyPal, using the referral code MATH88, you will receive P$10 PolicyPal credits. Then, just take part in a few simple activities (such as doing really simple quizzes, and do some of their “challenges” which is just clicking a single button). It took me just 5 minutes to earn another P$5 PolicyPal credits.

With P$15 PolicyPal credits, you can then redeem your free $10 FairPrice E-Voucher, as shown below. Throughout the entire process, there is no need to fork out a single cent of your own.

Do grab your free $10 FairPrice E-Voucher before the offer ends! Once again, the link to sign up for PolicyPal is https://www.policypal.com/referral/r?c=MATH88.

Free FairPrice E-Voucher obtained from PolicyPal!

Moonlight Sonata Presto Agitato (Amateur Recording)

Moonlight Sonata 3rd Movement (Presto Agitato) is the most exciting movement in the famous Moonlight Sonata by Beethoven.

The fast tempo (Presto Agitato) has to be sustained across the entire 3rd movement (around 7 minutes), making it quite a difficult piece for amateur pianists.

We record a version (imperfect, with mistakes) on Korg G1 Air. There is a long chromatic section, whereby we analyze what is the fingering most appropriate for the chromatic scales.

Amos Yee Education

Many people search for the education background of Amos Yee, but the information is scattered around the internet (and some sources are now defunct). This blog post summarizes all the information on Amos Yee Education, as well as honors and awards. All the education information are/were publicly available on the internet, but scattered across various sources.

Amos Yee achieved good academic achievements, but later got into a great deal of trouble, including jail time in both Singapore and America.

Amos Yee Education (Primary School)

  • 2005 – 2010: Pei Chun Public School.
  • Scored 244 for PSLE, with A* for Mathematics and Science, and A for English and Chinese.

Amos Yee Education (Secondary School)

  • 2011 – 2014: Zhonghua Secondary School.
  • Scored 11 points for O Levels (L1R5)
  • Raw Aggregate Score: 7, due to -2 for CCA (English Drama and Debating Society), -2 for MSP (Malay Special Programme)
  • A1 for English, E Maths.
  • A2 for A Maths (Additional Maths).
  • Other results (including Prelim results) are in this blog post.

At that time, the score of 7 points was good enough to go to Nanyang JC, which is now one of the top JCs in Singapore. Amos Yee’s Math subjects are consistently one of his best subjects throughout secondary school. His mother is a secondary school mathematics teacher.

Amos Yee Education (Honors and Awards)

  • Grade 8 guitar certification (ABRSM merit)
  • Best Short Film and Best Actor at The New Paper’s First Film Fest (FFF) for his film Jan, March 2011.
  • Nominated for a Humanities scholarship at Zhonghua Secondary School.
  • Taekwondo Brown Belt

How to keep floating plants in aquarium

Floating plants are a great addition to the home aquarium. The first few times we tried to keep floating plants, it all failed. Water lettuce, frogbit, and red root floater all melted away and died within days.

After multiple tries, we think that we have figured out the tricks to keep floating plants in the aquarium! The YouTube video below summarizes 8 essential tips for keeping floating plants alive and thriving in the home aquarium.

For beginners we recommend Salvinia, or water spangles, as the first starting floating plant. It is also easy to remove, as a great contrast to duckweed.


NA2 Live Water Spangles, Salvinia Minima, Water Velvet, Free Feeding Ring Aquatic Plant Aquarium Fish Tank, Top Water Plant, Floating Pond Plant, Pond, Goldfish, koi (24+ Spangles)

There are many advantages of Salvinia, including it being one of the easiest floating plants to keep alive.

Python matplotlib Plot Multiple Figures in Separate Windows

Matplotlib is a popular plotting package used in Python. There are some things to note for plotting multiple figures, in separate windows.

A wrong approach may lead to matplotlib showing a black screen, or plotting two figures superimposed on each other, which may not be the desired outcome.

Sample Matplotlib Code for Plotting Multiple Figures in Separate Windows

import matplotlib.pyplot as plt

plt.figure()
# plotting function here, e.g. plt.hist()
plt.savefig('filename1')


plt.figure()
# plotting function here, e.g. plt.hist()
plt.savefig('filename2')

plt.show()

One way to do this is to use the plt.figure() command for each figure that you want to plot separately. Optionally, you can use plt.savefig() if you wish to save the figure plotted to the working directory folder.

At the end, use the plt.show() command. The plt.show() command should only be used once per script.

$100 Voucher for iPhone 12 (Singtel Recontract Voucher)

Official Singtel $100 Recontract Voucher for iPhone 12 (and other phones): Singtel Recontract Voucher Website Link

With the iPhone 12 making its debut, no doubt thousands (or maybe even millions) of iPhone fans in Singapore will be queueing up to purchase the latest iPhone.

Do make a point to save $100, by using the Singtel Recontract Voucher worth $100, if you are eligible for it.

The old way of getting the Singtel Recontract Voucher is via calling 1688, or perhaps waiting for them to send the voucher to you. This old way may not work anymore! You may never ever get to speak to a human Singtel customer care officer if you call 1688.

The new way of getting the $100 Singtel Recontract Voucher is to use Referral Links such as this one, whereby the Singtel Recontract Voucher is applied automatically on the Official Singtel Website. It is very easy and convenient, and basically a free $100 discount off your iPhone, or whatever phone that you select that is eligible.


Hi, heard you were looking for a new mobile phone? Here’s a Singtel mobile offer just for you. Sign up using my exclusive link below to enjoy an extra $100 OFF on all phones when you switch to a new Singtel Combo plan. When you’ve switched, I’ll be rewarded too! Singtel terms and conditions apply.
Exclusive link: Singtel Recontract Voucher Official Website

Gigantiq Promo Code: MATH88

Our official promo/ referral code for GIGANTIQ is: MATH88

Official GIGANTIQ link via PolicyPal: https://www.policypal.com/referral/r?c=MATH88

Don’t have an account with PolicyPal yet? You’ll need one to start earning credits! Register with referral code MATH88 to receive $10 credits.

GIGANTIQ Reviews

GIGANTIQ (sometimes spelled as “Gigantic” by users) is an insurance savings plan, similar to Singlife or Dash EasyEarn. As of the current date, Gigantiq (purchased through PolicyPal) is clearly superior to Singlife or Dash EasyEarn, with 2% p.a. interest and up to 8% PolicyPal bonus credits earnings.

Gigantiq (Gigantic) vs Singlife

Singlife has recently reduced their interest rate to 2% (down from 2.5%). Hence, GIGANTIQ has the benefit of the additional 8% PolicyPal bonus credits compared to Singlife. The PolicyPal bonus credits are quite useful, it can be converted to NTUC FairPrice vouchers, Grab vouchers, or even cash.

Gigantiq (Gigantic) vs Dash EasyEarn

Dash EasyEarn has reduced their interest rate to 1.8% (down from 2%). Hence, GIGANTIQ is the clear winner here.

GIGANTIQ Promo Referral Code (MATH88)

Please use our GIGANTIQ Referral Code MATH88 when purchasing the plan via PolicyPal. It is very important to purchase through PolicyPal for the following reason:

  • Earn up to 8% p.a. in PolicyPal bonus credits, which can be exchanged for grocery vouchers, Grab rides, or even cash. If you buy GIGANTIQ from other sources, there is no such bonus.
  • Tip: You should deposit as much as possible initially if you want to earn the PolicyPal bonus credits, as the 8% p.a. is only applied to the initial deposit, not counting any topups.

Terms and conditions for earning PolicyPal bonus credits are detailed in the document here. Basically, there are two ways, via referral or by purchasing selected PolicyPal insurance policies.

Gigantic Etiqa (Gigantiq by Etiqa)

The Gigantiq policy is underwritten by Etiqa Insurance Pte. Ltd, which is the insurance branch of the Malaysian banking group Maybank. Maybank is the largest and most valuable bank in Malaysia.

Gigan tiq by Etiqa review (Pros and Cons)

  • Etiqa is the insurance branch of Maybank, which is the largest bank in Malaysia.
  • 2% p.a. returns for first S$10,000 for the first year.
  • No lock-in period. Withdraw and top up anytime.
  • Capital guaranteed.
  • Up to 8% p.a. bonus credits from PolicyPal.
  • Protected under the Policy Owners’ Protection Scheme which is administered by the Singapore Deposit Insurance Corporation (SDIC).

Gigantic (Gigantiq) vs Elastiq

Currently, there is not much point comparing Gigantiq with Elastiq, since ELASTIQ is fully subscribed. That means, you cannot open an ELASTIQ account even if you want to, it is totally full. In any case, the interest rate of Elastiq is 1.80% p.a, which is lower than Gigantiq.

Hence, do check out GIGANTIQ, Etiqa’s all-in-one insurance savings tool before it’s gone too!

Gigantiq Forum

As a final note, you may want to read the reviews of Gigantiq on a popular forum, Hardwarezone. Most of the reviews there are positive, and most recommend putting in $10,000. Any amount above S$10,000 has a reduced interest rate of 1% p.a.


Thanks for reading up to here. If you have decided to grow your money via GIGANTIQ, use our official  promo/ referral code for GIGANTIQ:

MATH88

Official GIGANTIQ link via PolicyPal: https://www.policypal.com/referral/r?c=MATH88


Disclaimer: The opinions on GIGANTIQ Account expressed in this blog post is for general informational purposes only and are not intended to provide specific advice or recommendations for any individual or on any specific security or investment product. It is only intended to provide information on GIGANTIQ Referral and GIGANTIQ Review. In particular, this blog post is not a substitute for obtaining advice from a qualified investment advisor.

 

Betta fish video playlist

We have compiled some betta fish videos in a YouTube playlist.

Interestingly, from the YouTube comments, people are showing the video to their betta fish rather than the human watching it!

The Aquarium section of our blog has also been very popular recently, do check it out here: Aquarium blog posts.

Keeping an aquarium is highly educational for children, in the process kids can learn about biology, chemistry, and math.


Math related aquarium blog posts:

Singlife 2.5% Review

Update: Instead of Singlife, we now recommend GIGANTIQ. Do check out our blogpost on GIGANTIQ (2% p.a. interest and up to 8% PolicyPal bonus credits earnings).


Singlife Referral Code Link: https://app.singlife.com/rBnltAod99

Previously, we have written on Singlife Review before, just to update and give more details on the excellent Singlife 2.5% interest account and give an in-depth review.

Basically, Singlife’s 2.5% interest is the highest among all deposit accounts in Singapore as of September 2020. (If you know of any higher interest rate accounts, do comment below!)

Also, Singlife’s 2.5% interest does not require you to do any credit card spendings, nor do you need to credit your salary, nor purchase any insurance or investments (unlike DBS Multiplier or OCBC 360 account). Basically, you need to do nothing!

If you put in $10,000 into Singlife (which is the recommended amount to put in), it is a free $250 for you within one year. For amounts greater than $10,000, it is recommended that you put the rest into Dash EasyEarn.

In conclusion, due to reduction of interest rates in banks, currently there is no bank account (be it savings or even fixed deposit) that can beat or even come close to Singlife’s 2.5% interest. (Unless you can fulfill multiple conditions in DBS Multiplier.)

Hence, Singlife’s 2.5% interest rate is very attractive currently!

Do read more on our detailed Singlife Review to learn more.


Singlife Referral Code Link: https://app.singlife.com/rBnltAod99

I’ve had a great experience with the Singlife Account, an insurance savings plan, and thought you would love it too! Save, spend, earn, & be insured! Install the app and sign up today to begin earning up to 2.5% p.a.* returns with your savings.

*Terms Apply

 

Laptop for data science and machine learning

We recommend and review some laptops/notebooks suitable for data science and machine learning.

Firstly, we state the 4 core important specs (specifications) for laptops for data science and machine learning.

1) RAM: Should be 8GB or higher.

2) CPU: Should be Intel Core i5, or even better Intel Core i7.

3) Storage: Should be at least 256 GB SSD.

4) GPU: Optional, but good to have for deep learning. (Note that Mac GPUs are not usable for deep learning.)

RAM and CPU are necessary in order to conduct computations successfully and within a reasonable time. Storage is necessary to process big data which can potentially be several gigabytes. GPU is useful to speed up deep learning, but is optional since there are many cloud or server options available.

For concrete recommendations, we recommend the following 5 laptops. Certainly, there could be other laptops that are equally suitable for data science and machine learning, do comment below if you have a good suggestion!

1)

ASUS ROG Strix Scar 17 Gaming Laptop, 17.3” 300Hz FHD IPS Type, NVIDIA GeForce RTX 2070 Super, Intel Core i7-10875H, 16GB DDR4, 1TB PCIe SSD, Per-Key RGB Keyboard, Wi-Fi 6, Windows 10, G732LWS-DS76

2)

Dell XPS 15 7590 Laptop 15.6 inch, 4K UHD OLED InfinityEdge, 9th Gen Intel Core i7-9750H, NVIDIA GeForce GTX 1650 4GB GDDR5, 256GB SSD, 16GB RAM, Windows 10 Home, XPS7590-7572SLV-PUS, 15-15.99 inches

3)
New Apple MacBook Pro (16-inch, 16GB RAM, 512GB Storage, 2.6GHz Intel Core i7) – Space Gray

4)

2020 Lenovo ThinkPad T590 15.6″ FHD Full HD (1920×1080) Business Laptop (Intel Quad-Core i7-8565U, 16GB RAM, 512GB SSD) Backlit, Type-C Thunderbolt 3, RJ-45, Webcam, Windows 10 Pro IST Computers

5)
HP Pavilion 15-inch Laptop, Intel Core i7, 16 GB RAM, 512 GB SSD Storage, Intel Iris Plus Graphics, Windows 10 Pro, Amazon Alexa Voice Compatible (15-cs3019nr, Mineral Silver)

Salvinia leaves with water droplet (Artistic Photography)

Some photos of spherical water droplets on Salvinia floating plant.

I think Salvinia is one of the easiest floating plant to keep in an aquarium. It has 3 forms Primary form, Secondary form, and Tertiary form and will adopt the most suitable form for whatever conditions is in your aquarium. (The photos shown below are Primary form. Initially, when I bought it, it was in Tertiary form.)

Rasbora pregnant? (Pregnant chili rasbora)

Recently, one of our phoenix rasboras (cousin of chili rasbora) is getting a little round in the belly. Is it pregnant (or the more technical term is gravid)?

We are not very sure, will ask in a forum soon afterwards. Possible alternative reasons is that it is bloated, overfed or even dropsy!

From our experience, it is better that the phoenix rasbora is fat rather than thin. A thin rasbora signals a possible internal parasite problem, which proves to be fatal for this small rasbora species in our experience.

Pregnant Phoenix Rasbora?

For more footage of the pregnant rasbora, do check out the YouTube video below.

Updating Spyder takes forever

Spyder is a Python IDE that is bundled together with the Anaconda distribution.

There are some problems that are commonly faced when it comes to updating Spyder. One way to update Spyder is to open Anaconda Navigator and click the settings button which has an option to update Spyder. But the problem is that the process can take a very long time. The process shows that it is “loading packages of /User/…/opt/anaconda3”.

Updating Spyder is constricted by …

Another way to update Spyder is to type “conda update spyder” in the terminal. A problem that can crop up is the error message: “updating spyder is constricted by …

Anaconda stuck updating Spyder [Solved]

For my case, it turns out that the version of Anaconda Navigator is outdated. Hence, I first updated Anaconda Navigator to the latest version.

Then, instead of clicking “Update application” which still didn’t quite work, we click on “Install specific version” and choose the latest version of Spyder (Spyder 4.1.5 in this case).

Then, the updating of Spyder in Anaconda Navigator worked perfectly!

How to update Spyder using Anaconda-Navigator: Click “Install specific version” instead of “Update application”.

Fun Ways to Help Your Kid Love Primary 1 Maths

Fun Ways to Help Your Kid Love Primary 1 Maths

Is your child gearing up for the upcoming academic year to set her first step in academics? You might be then in need of a prior guide about making maths fun for your child.

You’re never sure whether your child is going to love maths or stay far away from it. Although, maths is an important part of learning and helps in building a child’s analytical skills from the core. It helps them to develop their knowledge about dates, time, measurements, costs and numbers – calculating the life around them.

This makes the subject confusing and dreadful for a lot of children but the current P1 curriculum has been developed keeping in mind the psychological aspects of a child.

What will Your Child Learn in P1 Maths?

The key mathematics elements that constitute their P1 curriculum are:

  • Number Patterns: Helps them to develop their skills in identifying the even and odd numbers, the order of the numbers by filling out blanks that gradually enhances their knowledge towards addition and subtraction.
  • Identifying single and double digits: Students would get acquainted with –
  1. Number Bonds: Children would be taught to create addition bonds such as 1+2=3 or 2+2+2=6 and so on.
  2. Multiplication and Division Problems: Children would learn the numerical tables and learn how to perform basic multiplication or division problems.
  3. Identify Basic Shapes: They’d learn about 2-D shapes such as squares, rectangles, triangles, circles and solve worksheets based on these shapes performing additions or subtractions.
  4. Comparisons between Sizes, Weights and Lengths: P1 Maths also aims to cover measurements which would deal with comparing sizes, weights and lengths or given objects. It helps them to relate these concepts with their surroundings.

How to Make Maths Fun for Your Child at Home

These lessons may seem to be complicated but could be made fun for your child while practicing these at home in the following ways:

  • Take Your Kids to Grocery Shopping: Let your child count the number of items that you’re buying and check the price of each item. You can ask them to add the costs on the bill for you or add the similar kinds of items to give you a total of those.
  • Read Fun Math Books: Contrary to the beliefs of many, there are actually fun and creative Math Books available at various stores for your child. Some of these even consist of visuals that help you to catch the attention of your child. Read these books to your child so that they feel that you’re with them in their learning process.
  • Solve Number Patterns and Puzzles: Go through the internet and copy various maths puzzle and pattern problems. Solve these together with your child while making it look like a game.
  • Free Exam Papers: Get access to past year top school exam papers for your child to practise as more practice will make it perfect.
  • Comics and Songs are a Fun Way to Learn: There are various nursery songs that play with maths and children comics that are based on maths. These are really very helpful when you’re introducing maths to your child.
  • Use Props to teach Addition, Subtraction, Multiplication and Division: Your rooms are surrounded with different kinds of objects. Use these objects as props to help your kid learn about basic mathematical equations in a simple way.
  • Weighing Scales as a tool to learn: Use weighing scales that are readily available at home to teach your kid about mass and weight of objects.
  • Find a Professional Maths Tutor: Tuition Agency in Singapore provide reliable and quality tutors to your doorsteps to make learning Maths more fun

Learning maths at home can be fun when you’re using these methods to help your child become enthusiastic towards the subject and not shy away from it.

 

Dash EasyEarn Referral and Review

Dash EasyEarn promo code: DASH-2I2KM

Singtel Dash EasyEarn Referral

In order to use Dash EasyEarn, you first need to have Singtel Dash. The referral code is below!

Hi, we’re giving you up to $2 cashback for your first Singtel Dash transaction! Sign up with the referral code DASH-2I2KM or tap on this link https://appserver.dash.com.sg:443/mgm?DASH-2I2KM now. T&Cs apply.

Singtel Dash EasyEarn Review

We will give a short review of Singtel Dash EasyEarn. Technically, Dash Easy Savings Account is a insurance policy, but it works like a bank savings account. Basically the pros and cons of Singtel Dash EasyEarn are as follows.

Pros:

  • 2% per annum interest (much better than bank savings account or even fixed deposit).
  • This 2% holds for deposits up to $20,000.
  • Capital-guaranteed.
  • Protected by SDIC.
  • No lock-in period.
  • Comes bundled with life insurance (Be automatically covered with a death benefit of 105% of your Account Value).
  • Singtel is a big company (one of the biggest in Singapore), with good reputation and long history.

Cons:

  • There is a $0.70 fee for withdrawing to bank account (quite a low fee though).
  • Minimum balance of $2000 in order to earn the max 2% interest (quite a low requirement).
  • The 2% interest rate is only guaranteed for the first policy year.
  • The insurance policy is actually administered by Etiqa, not Singtel. Etiqa is a big insurance company though, it is part of Maybank which is the biggest bank in Malaysia.

I tried the transfer of funds into Dash EasyEarn (it is by eNETS only). The speed is very fast, almost instantaneously I could see the funds in Dash EasyEarn after transferring. I have not tried withdrawal of funds yet, due to the $0.70 withdrawal fee.

Update September 2020: I tried withdrawing, the process was very smooth and instantaneous. Basically, the withdrawal is via PayNow to the bank account linked to your mobile number. Your bank account will receive the amount withdrawn within seconds, while the $0.7o withdrawal fee is deducted from your Dash EasyEarn balance.

Dash EasyEarn Lite

What is this Dash EasyEarn Lite? Apparently, it is the “small” version of Dash EasyEarn when you deposit $2,000 or less. The interest rate is also correspondingly lower, at 1%.

Dash EasyEarn Lite information taken from the official website: https://www.tiq.com.sg/product/dash-easyearn/.

According to HardwareZone Forum, the Dash EasyEarn Lite option is applied automatically when your savings amount is less than $2,000.

Dash easy earn lite max premium is 2k.i think when you input the premium amount less than 2k its easy earn lite alrm

Source: HardwareZone

Update: The above information is incorrect. An official Singtel representative has contacted us to tell us the correct information.

The Dash EasyEarn Lite option is not automatically applied when the savings amount is less than $2,000 as it is only open to eligible Dash users such as work permit holders.

Is Dash EasyEarn Safe?

A popular question asked is definitely whether Dash EasyEarn is safe? The answer is it is safe.

Firstly, it is protected up to specified limits by the Singapore Deposit Insurance Corporation (SDIC), under the Policy Owners’ Protection Scheme. As of the current date, it means that your money in Singtel Dash EasyEarn is insured up to S$100,000 per account. Or in other words, in the unlikely event that Dash EasyEarn (Etiqa) collapses, your money up to S$100,000 is safe. You can see that Etiqa is under SDIC list of Policy Owners’ Protection (PPF) Scheme Members on the SDIC official website.

Secondly, Dash EasyEarn is a capital-guaranteed savings insurance policy. That means, it is impossible to lose the principal amount you put in. For example, if one puts in a capital of $20k (the max amount allowed), one will get back at least $20k no matter what the circumstances.

Lastly, Etiqa (the insurance company behind Dash EasyEarn) is regulated by Monetary Authority of Singapore (MAS). Their MAS license can be found on the MAS official website.

Dash EasyEarn vs Singlife

We have written about the excellent insurance savings plan Singlife in our popular blog post.

Basically, Singlife offers a higher interest rate of 2.5%, however this only applies to your first $10k deposit. Even though Dash EasyEarn offers a lower interest rate of 2%, it applies to a higher amount of $20k.

A logical conclusion is to max out Singlife first (by putting $10k in Singlife). Then, put in your excess in Dash EasyEarn.

Singlife Referral Code Link: https://app.singlife.com/enWxrIzdt9

(The Singlife referral code/ promo code is the above URL link. Just click it on your mobile device to apply the referral code.)

Dash EasyEarn Forum

If you still have any doubts about Dash EasyEarn, a good way to dispel your doubts is to read forums on Dash EasyEarn. The best forum on Dash EasyEarn is the one in HardwareZone Money Mind. The experts there will teach you more on how to maximize your earnings using Dash EasyEarn.

If you are interested in earning 2% interest with Dash EasyEarn, sign up with the referral code DASH-2I2KM or tap on this link https://appserver.dash.com.sg:443/mgm?DASH-2I2KM now!


Disclaimer: The opinions on Dash EasyEarn Account expressed in this blog post is for general informational purposes only and are not intended to provide specific advice or recommendations for any individual or on any specific security or investment product. It is only intended to provide information on Dash EasyEarn Referral and Dash EasyEarn Review. In particular, this blog post is not a substitute for obtaining advice from a qualified investment advisor.

 

Singlife Referral and Review

Update: Instead of Singlife, we now recommend GIGANTIQ. Do check out our blogpost on GIGANTIQ (2% p.a. interest and up to 8% PolicyPal bonus credits earnings).

Singlife Referral and Promotion Code (Worth $10)

Singlife Referral Code Link: https://app.singlife.com/enWxrIzdt9

(The Singlife referral code/ promo code is the above URL link. Just click it on your mobile device to apply the referral code.)

If you install and apply for Singlife using the above Singlife Referral Code, you will get S$10 credited to your Singlife account, as soon as you set up your Singlife account and activate your free Singlife Visa debit card.

Singlife Review

Singlife is a insurance savings plan that works similarly to a bank account, providing you a 2.5% per annum interest. You may withdraw your savings at any time, there is no lock in period.

What is most attractive about Singlife is definitely the 2.5% interest, it currently much better than many banks’ savings account or even fixed deposit account.

I find the setting up process very easy, it should take less than 15 minutes and can be done entirely online. The app is quite intuitive to use, and has a clean user-friendly interface.

Note that other than the attractive 2.5% interest rate, Singlife also gives a life insurance coverage of up to 105% of your account value and retrenchment benefits.

Illustration: You may check out how much interest you can earn with Singlife 2.5% interest compounded over many years, with this compound interest calculator: http://www.helpfulcalculators.com/compound-interest-calculator.

Singlife Withdrawal

I have personally tested the Singlife withdrawal (withdraw from the Singlife bank to a DBS bank account). While it is not instantaneous, the withdrawal is very fast (around 5 minutes to appear in my bank account). On paper, it can take up to 3 hours for the Singlife withdrawal process, which is still quite acceptable.

Singlife Protected by SDIC and Capital Guaranteed

One question that is bound to be asked by Singaporeans is “Is Singlife safe?”. Or “Is it safe to put my money in Singlife?”.

Do note that all Singlife policies, including the Singlife Account are protected up to specified limits by the Singapore Deposit Insurance Corporation (SDIC), under the Policy Owners’ Protection Scheme. As of the current date, it means that your money in Singlife is insured up to S$100,000 per account. Or in other words, in the unlikely event that Singlife goes bankrupt, your money up to S$100,000 is safe. You can see that Singlife is under SDIC list of Policy Owners’ Protection (PPF) Scheme Members on the SDIC official website.

In addition, the Singlife Account is capital guaranteed, which means that the principal amount you put in is shielded from any losses (unlike stocks where you can lose your capital).

Lastly, Singlife is regulated by Monetary Authority of Singapore (MAS). Their MAS license can be found on the MAS official website.


Singlife Referral URL Link: https://app.singlife.com/enWxrIzdt9


Singlife Account: Pro and Cons

So let us summarize the pros and cons of Singlife account.

Pros:

  • High interest of 2.5% p.a. (No other bank has such a high interest at the time of writing this post, even fixed deposits cannot compare with Singlife.)
  • Capital-guaranteed.
  • Protected by SDIC.
  • Comes bundled with life insurance and retrenchment insurance.
  • Comes with free Visa card (no fees).

Cons:

  • The 2.5% interest rate is not guaranteed (it can go up or down in the future). According to the Singlife Facebook, it will uphold the interest rate for at least a year.
  • The 2.5% interest rate is only for the first $10k in your Singlife Account. Subsequently amounts above your first S$10,000 up to S$100,000 will earn 1% p.a. returns (which is still quite good). Amounts above S$100,000 will not earn any returns.
  • No ATM machines, it is totally virtual.
  • Singlife is still relatively not well-known at the moment.

Singlife Hardwarezone and Singlife Reddit

You can check out the discussion about Singlife on the popular forum Hardwarezone or Reddit.

Basically, the comments about Singlife are quite positive (especially regarding the high 2.5% interest). The sentiment is that there is no harm trying out Singlife (while the high 2.5% interest is active, and then reconsider or transfer out when the interest rates drop).


If you decide to sign up with Singlife, do so with the referral code link below, and get $10 credited to your account!

Singlife Referral Code Link: https://app.singlife.com/enWxrIzdt9


Singlife Debit Card Review

The Singlife Account comes with a free Visa Debit Card. It has no annual fees and no FX (foreign exchange) fees. You can use the Singlife Debit Card overseas, there will be zero FX fees imposed on your overseas purchases.

Even if you just intend to use it rarely, there is no harm just activating your Singlife Debit Card. You can get instant notifications on your spending in the Singlife App. For greater security, you can lock and unlock your Singlife Card all through the Singlife App.

The most important thing to note regarding Singlife Debit Card is that you must activate it in order to get the S$10 Referral or Promotion bonus.


Disclaimer: The opinions on Singlife Account expressed in this blog post is for general informational purposes only and are not intended to provide specific advice or recommendations for any individual or on any specific security or investment product. It is only intended to provide information on Singlife Referral and Singlife Review. In particular, this blog post is not a substitute for obtaining advice from a qualified investment advisor.

Free E-Book: 200 Armoured Catfish: Corydoras, Scleromystax, Aspidoras and Brochis

Just came across this free E-book on Corydoras Catfish in a FaceBook Group called “Corydoras Vault Singapore“.

It is very comprehensive, and shows rare Corydoras that many people do not know even exist. It is fascinating how many species of corydoras “armored catfish” there are.

Something I learnt from the book is that Corydoras is named from Greek “kory” which means helmet, and “doras” which means skin.

Do download this free E-book (while it is still free):


200 Armoured Catfish: Corydoras, Scleromystax, Aspidoras and Brochis


Some YouTube footage of peaceful corydoras fish:

Toy poodle smile

Charlie the toy poodle smiling, as he happily goes for a walk. The poodle’s facial expressions are quite expressive, we can tell the mood of Charlie quite accurately from his face alone.

Toy poodle smile.

Photos taken by iPhone 11. The iPhone 11’s camera is really a notch up compared to iPhone XR. The quality of the photographs is noticeably better.


Apple iPhone 11, 128GB, Black – Fully Unlocked (Renewed)

More photos of Charlie the toy poodle:

Charlie the toy poodle smiling with mouth open.
Full photo of toy poodle smile.
Cute innocent toy poodle expression.
Blue skies and a toy poodle.
Toy poodle hanging out near a playground.

Fish that won’t eat shrimp

We showcase 3 fish that won’t eat shrimp, tried and tested in our very own 5 gallon nano planted tank.

1) Phoenix Rasbora

2) Neon Tetra

3) Lambchop Rasbora

These 3 fish are shrimp safe, in our experience.

There are many baby shrimp, juvenile shrimp, as well as adult blue shrimp (blue version of cherry shrimp) living happily alongside those fish. As well as 1 Amano shrimp.

From what we observe, the fish don’t disturb or bother the shrimp as well. Music is “Foo the Flowerhorn” style peaceful music, aka the Gymnopedie No. 3.

Usually, aggressive or predatory fish like the betta tend to eat or hunt shrimp.

It is relatively easy to breed shrimp, especially cherry shrimp and its color variants. There need to be enough calcium source in the tank, what we did is put some coral chips (crushed corals) which has calcium carbonate. The most common way for shrimp to die is due to unsuccessful molting.

It’s foolish to wear yourself out with work. (Ecclesiastes 10:15, explained by Pastor Rick Warren)

Pastor Rick Warren is a Christian writer that I respect a lot. I read his groundbreaking and life changing book “The Purpose Driven Life: What on Earth Am I Here For?” when I was a teenager. It is one of my favorite Christian books, along with Imitation of Christ by Thomas à Kempis.


In this week’s sermon “You’re Not God—Stop Acting Like It!“, Pastor Rick comes up with another gem. It seems God Himself is a proponent of work-life balance. The problem of overworking is especially prevalent in East Asia, where it even flows down to the student level.

It is quite common that the average student in Singapore has less than 8 hours of sleep. In fact, it can be argued that it is almost “impossible” to have 8 hours of sleep, one will have to sleep at 10pm and wake up at 6am, and virtually no teenager sleeps so early at 10pm.

The human body is designed to mix work with rest, overworking is not only unhealthy, it is counterproductive as well. It may be quite possible to obtain temporary success by overworking, but the health effects may catch up sooner or later.

Related post: Good night’s sleep adds up to better exam results – especially in maths


The sermon by Pastor Rick Warren:

“Only someone too stupid to find his way home would wear himself out with work.”

Ecclesiastes 10:15 (GNT)

You’re not God. You don’t have all the answers. You can’t do everything. If you’re struggling to find balance in your life, those admissions can transform everything. 

The Bible says, “Only someone too stupid to find his way home would wear himself out with work” (Ecclesiastes 10:15 GNT).

It’s foolish to wear yourself out with work. Do you realize that when you overwork, you’re playing God? It’s a way of saying that it all depends on you, that everything will crash down if you don’t keep the world spinning.

That’s just not true! You’re not the general manager of the universe. The universe will not fall apart if you take time to rest, if you take time to balance your life. God has it under control.

Often we do this to ourselves because we’re trying to please everyone. Learn this lesson today: You can’t please everyone. Even God can’t please everyone! One person wants it to rain. Another one wants it to be sunny. It’s absurd to try doing what even God can’t do.

When you live for the expectations of others, you pile a ton of “shoulds” on your shoulders. You may think, “I should work more hours,” “I should be as active as all the other parents,” or “I should volunteer for this project.” But realize this: No one is forcing you to do those things. Overworking is your choice. You choose to take on the extra work or not to take it on. And you choose the consequences that come with your choice.

When you deny your humanity and try to do it all, you’re robbing God of his glory. The Bible declares this in 2 Corinthians 4:7: “We have this treasure in jars of clay to show that this all-surpassing power is from God and not from us” (NIV).

Paul reminds us that we’re human beings. We’re feeble and fragile. Jars of clay break easily. If you drop them, they shatter. Clay pots have to be handled appropriately and with care. If not, they’ll be destroyed.

But the good news is that through our feebleness, the power and glory of God shine through. Your humanity isn’t something to hide. Instead, you can celebrate the power of God working through your limitations.

So admit it: You’re human. Thank God for that!