楞次定律是高中物理教学的难点,如何突破这个教学难点?清华大学附属中学特级教师孟庆东老师依据教材和学情特点,运用实验启发式教学法进行教学:提出问题→理论推断→分析讨论→归纳概括→练习运用。此教学法,既启迪学生的思维,提高学生的动手能力和观察能力,又培养学生分析、归纳总结的能力,收到极好的效果。虽然十年前信息技术在教学中的运用还不 Lenz’s law is the difficult point of high school physics teaching, how to break through this difficult teaching? Meng Qingdong, a top secondary school teacher in Tsinghua University, based on teaching materials and learning characteristics, using experimental heuristic teaching methods: questioning → theoretical inference → analysis and discussion → induction General → practice use. This teaching method not only enlightens students’ thinking, improves students’ practical ability and observation ability, but also cultivates students’ abilities of analyzing, summarizing and summarizing, and receives excellent results. Although the use of information technology in teaching ten years ago is not yet