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“压强”是物理学中最基本的概念之一,而在初中,却比较不容易为学生所接受。其实所谓接受的容易与否恐怕也只是相对的。显然,如果介绍压强只从定义出发,或对於液体和气体压强的产生原因硬要从理论上去抽象地加以解释,按照初中学生的年龄特徵,那的确会使他们感到很难理解而无法接受。相反地,如果能够按照学生的接受程度,多从观察实验出发,使学生从鲜明的形象中建立对“压强”的具体观念,然后适当地引导学生去探求其间的相互联系和相互依存关系,以达到初步的理性认识,
“Pressure” is one of the most basic concepts in physics, but it is not easy for students to accept it in junior high school. In fact, the so-called easy to accept or not is only relative. Obviously, depending on the age characteristics of junior high school students, it does make them difficult to understand and unacceptable if the introduction pressure is determined only from a definition or hard to abstractly explained theoretically for the causes of liquid and gas pressure. On the contrary, if we can proceed from the observation experiment according to the students’ acceptability, we should enable the students to establish the specific concept of “pressure” from the vivid image and then properly guide the students to explore the inter-relationship and interdependence between them To achieve the initial rational understanding,