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所谓以新带旧的教学策略就是信息的前移法则,即在学习新知识的同时,通过联想、迁移、梳理等方法把新旧知识统筹起来,从而达到事半功倍的学习效果。笔者在长期的教学探索中体会到启发式教学就是要引导学生独立思考以探求真理,而具体设计大致可以分为两类:一是以旧带新,即以学生已有的经验和知识作为学习的出发点,引领学生层层推进,思考并探究新知识;二则是以新带旧,开门见山,运用实验、模型等直观方法,引领学生学习探究新知识,并以新知识为观念上的固定点,牵引旧知识,强化其清晰性,稳定性和可辨性。
The so-called new teaching strategy with the old is the law of advancement of information, that is, learning new knowledge at the same time, through the association, migration, combing the old and new knowledge together, so as to achieve a multiplier effect. In the long-term teaching exploration, the author realizes that heuristic teaching is to guide students to think independently in order to seek truth. The concrete design can be divided into two categories: one is to take the old as new, that is, to learn from the students' existing experience and knowledge , To lead students to advance at different levels, to think and explore new knowledge; to use new methods such as experimenting with models and new methods to lead students to learn new knowledge and to fix the point of view of new knowledge , Pull old knowledge, strengthen its clarity, stability and discernible.