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力学知识复习的优劣直接影响着整个高三复习的效果,如果复习过程中不注重思维阶梯的预设,则要么复习过于浅显,学生的思维得不到发展;要么思维跳跃性太大,容易给学生造成挫败感.现以圆周运动中摩擦力相关问题的复习为例和大家分享笔者的做法.一、简化情境,唤醒记忆表象复习教学之前,在学生的记忆里存在着“记忆表象”.比如,如何判断摩擦力有无,静摩擦力、滑动摩擦
The pros and cons of mechanical knowledge review directly affect the results of the whole senior high school review, if the review process does not pay attention to the preconceptions of the thinking ladder, either review is too shallow, the students’ thinking is not developed; or thinking jumps too much, Students cause frustration.Now the friction movement in circular motion for review as an example and I share the author’s practice.First, simplify the situation, wake up the memory of the image review before teaching, there is a “memory appearance” in the student’s memory, For example, how to judge friction, static friction, sliding friction