论文部分内容阅读
与初中物理相比,高中物理在内容的深度广度、试题的灵活性、计算的复杂性等方面都有了明显的变化。严密的逻辑推理、隐秘的物理规律和一些物理过程利用常规实验难以再现等特点,给学生的理解和接受带来了诸多困难,形成了高中物理教学的难点。笔者结合高中物理教学的实际,提出以下几条突破难点的途径,供同行参考。一、减小问题梯度在“电源和电流”一节中,为了让学生能正确认识导体中电荷的定向移动速率,设置了下面一问题:有一条横截面积S=1 mm~2的铜导线,通过的电
Compared with junior middle school physics, high school physics has obvious changes in depth of content, flexibility of test questions, computational complexity and so on. Tight logical reasoning, hidden laws of physics and some physical processes are difficult to reproduce by conventional experiments. These problems bring many difficulties to students’ understanding and acceptance, and form the difficult point of high school physics teaching. The author combined with the actual teaching of high school physics, put forward the following several ways to break through the difficulties for peer reference. Reducing the Problem Gradient In the Power and Current section, in order to give students a correct understanding of the rate of directional movement of charge in a conductor, the following problem is set: A cross-sectional area S = 1 mm ~ 2 Copper wire, through the electricity