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一、借助科学思维方法讲授物理定律和原理科学的思维方法和研究问题的方法是比基本原理更为重要的知识,它是比“金子”还贵重的“点金术”。在讲授牛顿第二定律时,要明确指出用的是探索实验法,并启发学生如何用实验研究加速度与合外力、质量的关系。当合外力与质量同时变化时,无法研究加速度究竟因什么而变,此时又引入控制变量法,先保持质量不变,研究加速度与合外力的关系;再让合外力不变,研究加速度与质量的关系。启发学生以后在研究多个变量之间的关系时,要有意识地用控制变量法,先保持其它量不变,研究两个量的关系,以此类推。这样,不仅学会了牛顿第二定律,还掌握了研究问题的方法,有助
I. Teaching Laws and Principles of Physics with the Method of Scientific Thinking The scientific method of thinking and the method of researching problems are more important knowledge than the basic principles. They are the “golden spot” more valuable than “gold”. In the teaching of Newton’s second law, it is necessary to point out clearly that it is to explore experimental methods and to inspire students how to experimentally study the relationship between acceleration and external forces and qualities. When the external force and quality change at the same time, it is impossible to study what the acceleration changes. At this time, the control variable method is introduced to keep the quality unchanged and to study the relationship between acceleration and external force. The quality of the relationship. Inspire students in the future when studying the relationship between multiple variables, we should consciously use the control variable method, first keep the other volume unchanged, the relationship between the two quantities, and so on. In this way, not only did we learn Newton’s second law, but we also learned how to study the problem