惯性是初中物理教学中的一个难点 ,教师感到难教 ,学生认为难学 .通常学生在学习这部分内容时能一字不漏地将惯性概念完整地背出来 ,但碰到实际问题时却感到无从下手 .为了使学生能够正确地理解惯性概念 ,并能正确地运用惯性知识解决相关问题 .笔者认为教师在惯性教学中应注意 Inertia is a difficulty in junior middle school physics teaching. Teachers find it difficult to teach and students find it difficult to learn. Students usually learn to use this part of the content without fail to fully recognise the concept of inertia, but when they encounter practical problems, they feel it. No way to start. In order to enable students to correctly understand the concept of inertia, and can correctly use inertial knowledge to solve related problems. I believe teachers should pay attention to inertial teaching