《用水测量时间》一课的主要教学内容是让学生经历记录100毫升水缓慢地流完需要多少时间的活动过程,并根据已有的经验进行推测和验证,初步理解流水为什么能够用作计时工具,思考流水的快慢与时间的关系。教材中主要安排了3个部分:第一部分,认识古代的人们是怎样利用流水来计时的,让学生感受到古人的聪明才智, The main lesson in the “Time of Water Measurement” lesson is to give students an idea of ​​how long it takes to record 100 milliliters of water slowly and predict and validate them based on their own experience, so as to understand why water can be used as a timekeeping tool , Thinking about the relationship between the speed of water and time. The textbook mainly arranges three parts: The first part, how to understand the ancient people how to use water to time, let the students feel the wisdom of the ancients,