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演示实验作为一种有效的教学手段和教学形式,是初中科学教学的重要组成部分,是帮助学生建立科学概念和规律、理解和掌握科学知识不可缺少的环节。通过对目前演示实验存在的问题和演示实验教学的作用的分析,根据新课程的要求以及建构主义提出学生的认知特点,着重阐述了演示实验教学内容的选择应遵循的四点:内容选择应关注学生的兴趣;内容选择应关注探究性;内容选择应关注学生的生活经验;内容选择应关注现代技术的应用。
Demonstration experiment as an effective teaching method and teaching form is an important part of junior high school science teaching. It is an indispensable link for helping students to establish scientific concepts and laws, and to understand and master scientific knowledge. Through the analysis of the problems existing in the present demonstration experiment and the demonstration of the role of experimental teaching, according to the requirements of the new curriculum and constructivism put forward the students’ cognitive characteristics, the four points that should be followed in the selection of demonstration experiment teaching contents are emphasized: Concerned about students’ interests; content selection should focus on inquiry; content selection should focus on students’ life experience; content selection should focus on the application of modern technology.