在新编初中《生物》第二册中,“生物的遗传”是教学的难点,这主要是由于学生缺乏必要的知识基础,所以尽管本课的内容只是作为遗传学的一般常识,但学生学习起来有较大的难度。因此设计好本课的课堂教学程序,优化课堂结构就成为顺利完成本课教学任务的关键。我在教学实践中通过下列途径使本课教学取得了较为理想的教学效果。 In the new junior high school “Biology” Volume II, “biological inheritance” is the difficulty of teaching, this is mainly due to students lack the necessary knowledge base, so although the content of this lesson is only as a general knowledge of genetics, but students learn It’s more difficult. Therefore, designing the class teaching procedure of this class and optimizing the class structure become the key to the successful completion of this class teaching task. In the teaching practice, I achieved the ideal teaching effect through the following ways.