初二物理中有少数习题，如果仅靠理论推导、公式验算，教师既不容易讲解，学生因能力的限制也难以独立思考完成．但如果避开复杂公式的逻辑推理，而用画图法解析，常常能让学生直接看到结果．使抽象、繁杂的问题变得简便、直观．真是妙解生花，学生学起来亦兴趣盎然．例回有两 There are a few exercises in the second day of physics. If you rely solely on theoretical derivation and formula checking, the teacher is not easy to explain. Students are unable to think independently because of limitations in their abilities. However, if you avoid the logical reasoning of complex formulas and use the drawing method, you can often let the students see the results directly. Make abstract and complicated problems easy and intuitive. It’s a wonderful solution, students are also interested in learning. There are two cases