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本文通过问卷及访谈的方式,从初中生识别气体、从科学概念的角度来解释气体的有关特性、认识气体的微观机制等3部分来探寻初中生在学习物理前后,在气体相关概念的理解方面存在的相异概念.研究发现,中学生在气体相关概念的理解方面存在着十分丰富的前概念,例如某些学生常将空中漂浮的细小颗粒认为是气体,气体都是无色无味的等.教学中要关注这些前概念,并帮助学生发生概念的转化.
Through questionnaires and interviews, this paper tries to find out the gas from junior high school students, explain the related characteristics of gas from the perspective of scientific concepts, and understand the microscopic mechanism of gas to find out junior and middle school students’ understanding of gas-related concepts before and after studying physics There are different concepts.The study found that there are very rich preconceptions for the understanding of gas-related concepts among middle school students, for example, some students often think of fine particles floating in the air as gas and gas as colorless and tasteless. We should pay attention to these preconceptions and help the students to convert concepts.