Difficulties: How to determine the point M? Because the side lengths of the left right-angled triangle are 3, 4 and 5 respectivel
What are the characteristics of Montessori mathematics?
1. Gamification of teaching AIDS: This teaching aid is designed wi
Dragons and tigers leap, young eagles fight for chapters, dandelions set sail, Huo Ying flies, the river is sharp, the river is at sunrise, Hong Yuzhi knows