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一、根据课本实验,启发学生探究新问题,形成新思想在“磁生电”的实验中,我指导学生做好该实验的同时,让学生在实验中体会新问题。提出问题:用手拿着导线做切割磁感线时与不切割磁感线时,两次用力进行比较。学生猜想:1.用力一样。2.用力前者大些。3.用力后者大些。
First, according to the textbook experiment, to inspire students to explore new issues and form new ideas In the experiment of “Magnetic Electrophysics”, I guide students to do the experiment while allowing students to experience new problems in the experiment. Ask the question: When using the hand-held wire to cut the magnetic induction line and when not cutting the magnetic induction line, use twice the force to compare. Students guess: 1. Use the same force. 2. Force the former to be larger. 3. Force the latter to be larger.