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开发独特的浮力大小观念测试工具,采用实验操作和访谈相结合的方法,分别从学生关于浮力大小的观念种类、各种观念的结构及其运用规律、一般学生所持有的观念数量等方面,对未学习浮力的初中学生关于浮力大小的理解进行深入地调查研究.研究发现:初中学生主要存在9种观念,每种观念又分为几种亚观念,各亚观念有时彼此矛盾,且他们的运用具有一定的规律;每个初中学生至少持有一种观念,最多可同时持有六种观念,绝大多数学生同时持有三种或三种以上的观念,且持有三种观念的人数最多;学生运用某种观念与实验情景有很大的关系.最后提出教学的建议.
This paper develops a unique tool for measuring the size of buoyancy by using a combination of experimental and interview methods. From the aspects of students’ concepts on the size of buoyancy, the structure and application of various concepts, the number of concepts held by students in general, This paper makes an in-depth investigation on the understanding of the buoyancy of junior high school students who did not learn buoyancy.The study found that there are nine kinds of ideas in junior high school students, each concept is divided into several sub-concepts, sub-concepts sometimes contradict each other, and their There is a certain law of application. Each junior high school student holds at least one concept, can hold up to six concepts at a time, and most students hold three or more concepts at the same time. The number of people who hold three kinds of concepts Most students use some ideas and experimental scenarios have a great relationship.Finally put forward teaching suggestions.