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小5_三角形の角の大きさのひみつ
Author:
KUMIKO TAKANO
GeoGebra
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standingwave-plus
直線の軌跡
standingwave
sine-wave
standingwave-reflection
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CAS (Computer Algebra System)
地動説と天動説
二つの正三角形
加法定理（cos）
二次関数と一次関数の共有点
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Subtraction
Sphere
Planes
Normal Distribution
Polynomial Functions