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实验原理“翻跟斗的小人”用一些我们身边容易找到的材料,制作简单,利用了重心移动的原理(电池滚动而带动外壳翻转),使小人不停地翻跟斗。操作方便,制作简单,让孩子们喜爱科技,喜欢动手动脑。材料:废旧1号电池、硬卡纸、双面胶、水彩笔1.将长20厘米、宽7厘米的硬卡纸围成圆筒状,用双面胶粘贴固定。2.将其中一个筒口用长8厘米、宽5厘米的纸封住。
Experimental principle “Tipping the villain ” With some of the materials we are easy to find, making simple, using the principle of moving the center of gravity (battery rolling and flip the shell), so that the villain kept tipping over. Easy to operate, easy to create, so that children love science and technology, like hands-on brain. Material: waste battery No. 1, hard cardboard, double-sided tape, watercolor pen 1. Will be 20 cm long and 7 cm wide cardboard jammed into a cylindrical shape, with double-sided adhesive paste fixed. 2. One of the mouth with a long 8 cm, 5 cm wide paper sealed.