内容正文:
苏教版二年级上册
有趣的七巧板
综合与实践
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
七巧板是我国一种传统的智力玩具,用它可以拼出千变万化的图形,也称“七巧图”。七巧板流传到国外后,引起了很多人的兴趣,被称作“唐图”。
知识拓展
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
比比想想
1
2
5
4
7
6
3
一副七巧板有几块?
有几种不同的图形?
哪几块的形状和大小完全相同?
7块。
3种。
1和2,4和6的形状和大小完全相同。
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
想想拼拼
你能用七巧板拼出已经认识的图形吗?
我选两块,拼出了三角形和四边形。
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
想想拼拼
选3块能拼出更多的图形。
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
想想拼拼
选的块数越多,拼法也越多。
你是用哪几块拼的?和同学交流。
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
拼拼说说
下面都是用一副七巧板拼成的图形,分别像什么?你能照样子拼一拼吗?
你还能用七巧板拼出哪些图形?把拼出的图形贴在教室里,大家共同欣赏。
鱼
羊
狐狸
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
课堂总结
回顾活动过程,你觉得七巧板“巧”在哪里?
用2块、3块、4块……都能拼成已经学过的图形。
七巧板能拼出很多有趣的图形。
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
www.youyi100.com
课后作业
完成练习册本课时的习题。
$