一个数学家的叹息

This American Math educator proposes teaching Primary/Sec math in new ways :

1. HISTORY : how human discovered the math ideas
2. Do not separately teach Geometry & arithmetics: eg.
   1+3+5+7 =16=4^2
3. Have fun of Math thru discovery by students, not by remember formula.
4. Intuition 直觉 : use more
   …

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