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在物理教学实践中,笔者通过不断探索,设计了一个非常简单实用的小实验,突破了实验教学难点。一、实验材料准备1包食用小酱袋(番茄沙司)、1瓶矿泉水。二、实验装置制作首先用针在酱袋一端封口处扎1个和牙签一样粗的小孔,挤出少许酱汁,然后将酱袋放在盛水的杯中,直到酱袋恰好能在水中漂浮为止,最后拧开矿泉
In the practice of physics teaching, through continuous exploration, the author designed a very simple and practical experiment, breaking the difficult point of experimental teaching. First, the experimental materials 1 packet of food small sauce (tomato sauce), 1 bottle of mineral water. Second, the experimental device production First needle in the sauce bag at the end of the seal tie a toothpick and a small hole, squeeze out a little sauce, and then put the sauce bag in the cup of water until the sauce bag just in the water Floating up, finally unscrew the spring