“捻儿”是什么?就是点炮用的那根引线。为什么用这个词儿?笔者认为好的课堂设计应该能“引爆”一些东西,否则,对于学生来说,有教材、有习题、有答案,甚至有微视频,干吗还要老师来教这节课?我们回想一下课堂,教师的教学和设计其实是一种力量,是加诸于学习者身上的一种力量,那么这种力量怎么用?笔者认为,好的设计应该像一件“优秀”的时装:一是不限制人身肢体的自由(不压抑人),二是要有修饰身材作用(对人有所帮助)。有时候,它们是矛盾的——修身的力量大了,肢体肯定不自由,反 “Twins children ” What is it? Why do I use this word? I think that good classroom design should “detonate ” something, otherwise, for students, there are textbooks, exercises, answers, and even micro-video, but also the teacher to teach this Lesson? We recall the classroom, the teaching and design of teachers is actually a kind of strength imposed on the learners, then how to use this power? The author believes that a good design should be like a “ Excellent ”fashion: First, do not limit the freedom of the body and limbs (not depressed), the second is to have the role of body modification (to help people). Sometimes, they are contradictory - the power to cultivate is great, the body is certainly not free, anti