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我们只要稍加留意日常生活中的一些废弃物品,总能够找到可以用来演示物理小实验的“宝贝”.如常见包装盒上的圆形磁性片,直径约10 mm,厚度1 mm左右.因为磁性极强,是做小实验的好材料.笔者设计了一组利用磁性片的系列实验,或用来引入新课,激发学生思维;或用来展示物理现象,给学生感性认识;或将理论联系实际,培养学生动手能力.总之,根据教学内容灵活选用.
As long as we pay a little attention to some of the waste products in daily life, we can always find the “baby” which can be used to demonstrate the physics experiments.If the round packing on the common box is about 10 mm in diameter and about 1 mm in thickness Because the magnetism is very strong, it is a good material to do the small experiment. The author designed a series of experiments using magnetic sheets or used to introduce new classes to stimulate students’ thinking; or used to display physical phenomena and give students perceptual knowledge; or The theory with practice, training students ability .In short, according to the teaching content of flexible choice.