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模型思想是数学的基本思想之一,模型的产生、发展、形成的过程,是数学知识建立和应用的过程,也是儿童数学学习展开、推进、提升的过程。本文结合二年级“两步计算的加减法实际问题”的教学,谈一谈如何基于模型思想让学生经历“形—型—行”的学习过程,自主发现问题、提出问题、分析问题、解决问题,掌握数学思考方法,渗透数学模型思想。
The model idea is one of the basic ideas of mathematics. The process of the generation, development and formation of the model is the process of establishing and applying mathematical knowledge. It is also the process of developing, promoting and improving the learning of children’s mathematics. This article combines the second grade “two-step calculation of the actual problem of addition and subtraction, ” teaching, talk about how to make students experience “learning - type - line ” learning process based on the model idea to discover problems, ask questions, Analyze problems, solve problems, grasp mathematical thinking, infiltrate the mathematical model.