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Soroban or 9 bead abacus
作者：
James Monaghan
主題：
加法
,
算術
,
算術運算
Soroban or 9 bead abacus.
GeoGebra
Modified copy of Jerzy Mil's soroban.
最新資源
How to Draw a Cube in 2D
Thales' Intercept Theorem
Angle Bisector: Quick Warm Up Questions
Right Triangle Trig Ratios: sin, cos, tan
Two Triangle Theorem
探索資源
koordinat
Proofinscribedtangentandsecant
One variable inequations: graphic resolution
Constant sum of triangle areas
探索主題
坐標
函數圖形
極限值
向量
二項分布