Estimating Percents

作成者:David Cox

Play with this applet until you can consistently estimate percents with less than 5% error. Show Mr. Cox, then move to the next applet: http://www.geogebratube.org/student/m498041

新しい教材

Isosceles Right Triangle
Right Triangle Inscribed in a Semicircle
挂谷问题——三尖瓣形
Congruent Figures
Congruent Sides & Angles in △s: Exploration

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外接円
正三角形
ベクトル (三次元)
四角形
ランダムな実験