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Author:
John Golden
Topic:
Area
How can you change a triangle and keep the same area? For Simon Gregg and the Maria square fraction talk!
http://followinglearning.blogspot.com/2016/03/make-fraction-talk-square.html
GeoGebra
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Untitled
Pythagorean Day
拼砌四邊形 - 工作紙
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判斷錐體
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Trial 1
translation of stepper function
trig ratios
kalpanaben
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Histogram
Mode
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Fractions