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初中物理总复习应该以物理教学大纲为纲,以物理课本为本。一、挖掘课本内容,指导学生看书。其一,根据课本内容,编写习题,由浅入深,引导学生看书,让学生理解物理概念和物理规律。以初中物理第一册第六章“浮力”为例,我自编了一组指导读书题:包括简述阿基米德定律演示实验、浮力产生的原因和浮力的方向,以及涉及密度、阿基米德定律和弹簧秤的测定浮力的小综合题,判断、辨析有关物体浮沉条件的思考题等。其二、针对教材难点和学生平时作业常见的错误改编课本上的习题,启发学生的解题思路。仍以浮力为例。学生对浮力产生的原因感到难以理解。我首先让学生做p.116(7)小题和p.139(7)小题,使学生认识到压力差等于浮力。然后改进p.167(7)小题,内
The review of junior high school physics should be based on the physics syllabus and the physics textbook. First, tap textbooks to guide students to read books. First, according to the textbook content, writing exercises, from shallow to deep, guide students to read books, so that students understand the physical concept and physical laws. Take the buoyancy of Chapter 6 of the first volume of junior high school physics as an example. I have compiled a set of guided readings: including a brief description of Archimedes’s law demonstrating the experiment, the causes of buoyancy, and the direction of buoyancy, as well as the density involved. Kimrid’s law and spring scales determine the buoyancy of a small comprehensive problem, determine, identify and analyze objects related to floating conditions of the problem and so on. Second, according to the difficulty of the teaching materials and the common mistakes of the students in their daily work, the exercises on the textbooks are adapted to inspire the students’ problem-solving ideas. Still taking buoyancy as an example. Students find it difficult to understand the causes of buoyancy. I first asked the students to make p.116(7) and p.139(7) to make students realize that the pressure difference is equal to buoyancy. Then improve p.167(7)