解题教学是物理课堂知识教学与方法教学的重要手段,同时更是物理思维训练的必要阶段。高效的物理课堂,必须重视典型试题对教学的鲜明的导向性与示范性。优秀物理教师一直比较关注对典型试题的探究与思考。例如,数年来,以蹦极运动为题材背景创设的物理试题并不少,若干教材或教辅资料都进行了“忽略弹性绳质量”的理想化处理;但实际弹性绳又粗又长质量难以忽略。若考虑蹦极运动中弹性绳的质量,富于创意的一道“新题”出 Problem-solving teaching is an important means of knowledge teaching and method teaching in physics class, and it is also an essential stage of physical thinking training. Efficient physical classroom, we must attach importance to the typical teaching of the test-oriented and demonstrative. Excellent physics teachers have been more concerned about the exploration of typical questions and thinking. For example, there have been quite a few physical questions created over the years on the theme of bungee jumping. Some textbooks or teaching aids have been idealized to “ignore the quality of elastic cords.” However, the actual elastic cords have a long, thick mass Hard to ignore. If we consider the quality of elastic rope in bungee jumping exercise, a creative “” new title "out