学之法在于悟,教之法在于度.在教学过程中需要把握好三对关系之间的度:“旧知识”与“新知识”之间的关系、“合作学”与“自主学”之间的关系以及“讲什么”与“留什么”之间的关系.本文以“平抛运动的规律”教学为例,对这三对关系进行阐述,并给出相应的构建策略和案例. The law of learning is enlightenment, the law of teaching is degree.During the teaching process, we need to grasp the degree of three relations: the relationship between “old knowledge” and “new knowledge”, “cooperative learning” And “autonomy” and the relationship between “what to say” and “what to stay in.” This paper takes the teaching of “law of Pingtan throwing movement” as an example, Elaborates, and gives the corresponding construction strategy and case.