[选题分析]“做中学”是一种实践教育思想。本课从“水会从茶杯里倒流出来吗”这样一个小的问题出发,逐步发掘引申出更多的可以深入探究的问题,激发学生“做”的兴趣,通过“做”来完成对大气压力和水的张力等科学知识的探究与建构。 [Topic analysis] “doing high school ” is a kind of practical education thought. This lesson starts from a small problem such as “Will water flow back from a cup of tea?” And gradually finds out more problems that can be explored in depth, arousing the interest of students in “doing ”To complete the atmospheric pressure and water tension and other scientific knowledge of exploration and construction.