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《物体的浮与沉》这节课是力和运动关系的实际应用问题,初中生对于抽象的力和运动关系理解并不透彻。奥苏贝尔认为,要建立新、旧知识之间的联系,促进有意义学习的发生,最有效的策略就是利用适当的引导性材料对当前所学新内容加以定向和引导。如果利用好《力和运动》中学生已经学过的理论基础设计出比较浮力重力关系的实验,从而判断物体的浮沉条件,这样效果会不会更好呢?好的引入是成功的一半,由此我想到色彩绚丽的鸡尾酒,
“Floating and sinking objects” This lesson is the practical application of the relationship between strength and sports, junior high school students understand the relationship between abstract power and movement is not thorough. Ausubel believes that the most effective strategy for establishing the connection between new and old knowledge and for promoting meaningful learning is to use the appropriate introductory material to direct and guide what is being learned. If we make good use of the theoretical basis of the “power and exercise” students have been to learn the experiment of comparing the relationship of buoyancy gravity to determine the objects floating conditions, so the effect would be better? Good introduction is half successful, thus I think of colorful cocktails,