新课引入虽然有很多种不同的手段,但根据多年的教学经历,笔者认为用一些简单但新奇的低成本小实验引入新课,最能调动学生的兴趣。这类新奇的低成本小实验也会让授课教师“魔力”十足,吸引学生因“亲其师”而“信其道”。下面选择几个在实际教学中笔者觉得效果比较好的课堂小实验,谈谈一己之见,与广大物理同仁交流。一、楞次定律:磁铁吸铜众所周知,磁铁只对钢铁有吸引作用,而对铜铝 Although there are many different ways to introduce the new curriculum, based on years of teaching experience, I believe that it is most likely to mobilize students’ interest by introducing some simple but novel experiments with low cost and low cost. Such novelty and low-cost small experiment will make the teaching teacher “magical ” full, to attract students due to “to kiss their teacher ” and “believe it ”. The following selection of a few in the actual teaching I think the effect of better classroom small experiment, talk about my own opinion, and the general exchange of physical colleagues. First, Lenz’s law: magnet attracting magnet As we all know, magnet only attractive to steel, and copper and aluminum