概念是前人在大量的生命实践活动中,通过高度的思维加工提炼而成的。过去我们将教学定位在知识的认识和符号表达上,没有深入了解它产生的原因和过程,以至于学生难以内化抽象的知识。现在,我希望引导学生经历知识的产生过程,让学生领悟它的深刻内涵,习得思想方法。活化产生价值——百分数的认识以百分数的认识为例。许多老师上百分数都会创设情景,给出几杯糖水和糖的含量,问哪杯水比较甜。孩子经过思考后会联系前面学过的分数, Concept is the predecessors in a large number of life practice activities, refined through a high degree of thinking made. In the past we positioned our teaching on the knowledge and symbolic expression of knowledge without a thorough understanding of the causes and processes that led to it, so that it was difficult for students to internalize the abstract knowledge. Now, I hope to guide students through the process of knowledge generation, let students understand its profound connotation, learning ideas and methods. Activated value - the perceived percentage as a percentage of awareness. Many teachers set the scene on a percentage basis, giving a few cups of sugar and sugar and asking which cup of water is sweet. After thinking about the child will contact the scores learned in front,