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鸡蛋浮起来 PowerPoint PPT Presentation


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鸡蛋浮起来. 材料:生鸡蛋一个,大玻璃杯两个,食盐若干,小勺一个,玻璃棒或筷子一根 步骤: 1. 将一个生鸡蛋放入盛有清水的玻璃杯中,可以看到鸡蛋沉入水中。 2. 然后逐渐向杯中放入食盐,并不断搅拌,可以看到鸡蛋悬浮于水中任意位置。 3. 继续向杯中放入食盐,直到鸡蛋漂浮于水中。. 开头: 交代时间、地点,实验所需的器材及实验的内容。. 我拿出一只盛着清水的玻璃杯,一个新鲜的 鸡蛋,一双筷子和一包食盐。准备做一个鸡蛋浮上来的实验。. 火眼金睛. 1 、做实验时语言、动作、神态是怎样的? 2 、在观察时语言、动作、神态又是怎样的?我当时有什么想法呢?

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鸡蛋浮起来

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