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物理是以实验为基础的学科。做好实验是提高物理教学质量的重要环节。初中物理教学大纲明确提出初中物理教学要以观察、实验为基础，对大纲规定的实验都应力求做好。各种版本的初中物理教材按照大纲精神，十分重视实验内容的安排，不仅有演示实验、学生分组实验，还编入了颇具
Physics is an experiment-based discipline. Doing well experiments is an important part of improving the quality of physics teaching. The syllabus for junior high school physics syllabus explicitly puts forward that junior high school physics teaching should be based on observation and experiment, and strive to do a good job on the experiments prescribed in the outline. Various versions of junior high school physics textbooks follow the outline spirit and attach great importance to the arrangement of experimental contents. Not only demonstration experiments and student group experiments, but also a great deal