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如何上好惯性这节课,是所有初中物理老师面对的一个难题。根据多年的教学实践,选取了执教公开课前的二个典型的失败案例并对其反思,提出了一种有效的解决思路:通过举例法让学生从现象中抽象出“静止的物体总要保持静止,运动的物体保持原来的运动不变”的固有属性,从而建立惯性概念;通过活动引导来加强学生的感知和体验,加深对惯性概念的理解;惯性概念具有学习进阶的特点。
How to do a good inertia of this lesson, all junior high school physics teachers face a problem. According to many years of teaching practice, two typical failure cases before coaching open class are selected and reflected on them, and an effective solution is proposed: students can abstract the phenomena of “static objects” Keep the motion of the original object to maintain the same movement, "so as to establish the concept of inertia; through activity guidance to enhance students’ perception and experience, to deepen the understanding of the concept of inertia; inertia concept has the characteristics of learning advanced.