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如果你认为自己懂得理论而不懂得实践,其实你并非直正懂得理论;如果你认为自己懂得实践而不懂得理论,其实你并非真正懂得实践.一、什么是教学案例先看下面一个教学案例.案例1 浮力的大小跟哪些因素有关.教师先让学生通过活动认识到:浮在液面上的物体受到浮力的作用;在液体中会下沉的物体也受到浮力的作用,并且这个浮力可以用弹簧秤称出.在这个基础上,教师向学生提出:你认为浮力的大小可能跟哪些因素有关呢?对这个问题,学生提出了许多假
If you think you know the theory but you do not know how to practice, you do not know the theory rightly. If you think you know how to practice without understanding theory, you do not really understand the practice. 1 The size of the buoyancy is related to the factors that teachers should use to make students recognize that the objects floating on the surface are buoyant and the objects sinking in the liquid are buoyant and the buoyancy can be measured by a spring balance On this basis, the teacher asked the students: What do you think the buoyancy may be related to the size? To this question, the students made a lot of false