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【教学片断】(通过自学,学生认识完半径、直径、圆心等概念后)师:学到现在,关于圆,一些基本的知识我们已经了解得差不多了。那你们觉得还有没有什么值得我们深入地去研究?生:(自信地)有。师:说得好,其实不说别的,就圆心、直径、半径还蕴藏着许多丰富的规律呢,待会儿同学们可以?
【Teaching Pieces】 (After learning the concepts of radius, diameter, center of circle, etc. by self-study) Teacher: Now, about the circle, some basic knowledge we already know is almost the same. Then do you think there is nothing worthy of our in-depth study? Health: (confidently) there. Teacher: Well, in fact, do not say anything else, the center, diameter, radius also contains a lot of rich law it, later students can?