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由于初中学生受到知识水平的限制,物理教材中有些概念不可能交待清楚。而进入高一后,物理教材除了在初中的基础上增加了深度和广度,对基本概念的阐述也比较严密,这就要求在教学中,使学生在学习有关概念时,要引导他们居高临下,重新认识过去在初中学过的概念。否则,就会导致学生把初高中物理中的一些概念相互对立起来,形成模糊的认识。下面就谈谈高一物理教学中常见的几个例子。一、关于摩擦力的方向对于摩擦力,高中物理提到:摩擦力既可充当阻力,也可充当动力。例如:小车载
As junior high school students are limited by the level of knowledge, some concepts in physics textbooks cannot be clearly explained. After entering the first year, physics textbooks have added depth and breadth to the basics of junior high school. The explanation of the basic concepts is also strict. This requires that in the teaching, students should be guided to take a higher position when they learn relevant concepts. Get to know the concepts you learned in the past. Otherwise, it will lead students to put some concepts in the physics of the junior high school against each other and form a vague understanding. Let’s talk about some common examples in high school physics teaching. First, on the direction of friction For friction, high school physics mentioned: friction can act as both resistance and power. For example: Small car