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七巧板（tangram）
Author:
孟宝兴
拖动每个形状，用对应的点选择对象。
GGB学习交流群：217440999 作者：云南师范大学 孟宝兴 QQ：297770550 邮箱：mengbaoxing@163.com
Discover Resources
G.C.A.1 Investigation of Similar Circles
Triangle adding to 180 degrees
line
Three Dice (Intuition)
Fence-end
New Resources
Example LF.DID.0
parrallel lines
Linear Transformations- Applet
Colourful waves with circles
Linear Transformations
