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自主学习理论认为:学生是学习的主人,必须要有主人翁的意识参加学习。在复习课上,我们如何提高复习实效呢?笔者认为应该紧抓重难点,下面以非金属及其化合物单元复习为例。重难点1:硅酸酸性比碳酸弱例1二氧化硅与碳酸钠和碳酸钙反应的原因?与硅酸酸性比碳酸弱是否矛盾?点拨:玻璃工业生产的主要原理是在高热的条件下发生:
Autonomous learning theory: students are the masters of learning, we must have the sense of ownership to participate in learning. In the review class, how can we improve the effectiveness of the review? I believe that we should grasp the heavy and difficult points, the following non-metallic and compound unit review, for example. Difficulties 1: Silicic acid is weaker than carbonic acid Example 1: Reasons why silica reacts with sodium carbonate and calcium carbonate? Is it inconsistent with acidity of silicic acid rather than carbonic acid? Discrimination: The main principle of the glass industry is that it occurs under conditions of high heat :