一、理论源于实践,验证来自生活来源于生活实践的物理知识又以抽象的理论存在于教材之中,物理学科的价值只有把学到的知识自觉地联系于实际才能得到体现。我们生活的自然环境中存在着各种各样的物理现象,关键是教师要引导学生学会观察、学会思考,进而学会实验。例如,要求学生设计一个用“电能表”和“计时表”测量家用电器工作时的实际功率;再如,家庭照明用电,可以把晚上灯光较暗的时间与 First, the theory stems from practice, and verifies that the physical knowledge derived from the life practice of life exists in the teaching material with the abstract theory. The value of the physical discipline can be reflected only when the learned knowledge is consciously linked with the reality. The natural environment in which we live has all kinds of physical phenomena. The key is that teachers should guide students to observe, learn to think, and then learn the experiment. For example, students are asked to design a “watt-hour meter” and “chronograph” to measure the actual power of the household appliance. For another example, household lighting can reduce the nighttime lighting time to