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数学概念教学的意义不仅在于使学生掌握书本知识,更重要的是让他们从中体验数学家概括数学概念的心路历程,领悟数学家用数学的观点看待和认识世界的思想真谛,进而发展智力和培养能力。一元二次方程是在一元一次方程基础上“次”的推广,同时它是解决诸多实际问题的需要,为勾股定理、相似等知识提供运算工具,是二次函数的基础。周素裹老师在执教“一元二次方程”时,精心设计每一个教学环节,让学生深入感知、渐进抽象、实践巩固。创设情境,概括概念;辨析应用,理解概念。突出了数学概念的本
The significance of mathematical concept teaching is not only to enable students to master the book knowledge, more importantly, let them experience mathematicians summed up the concept of mathematics mentality, understanding mathematician view and understanding of the true meaning of the world from the mathematical point of view, and thus develop intelligence and develop ability . The quadratic equation is the promotion of “times ” on the basis of the monistic equation. At the same time, it is the need of solving many practical problems. It is the basis of the quadratic function to provide computing tools for the Pythagorean theorem, similarity and other knowledge. Zhou Su wrapped the teacher coached “quadratic equation ”, carefully designed for each teaching session, so that students in-depth perception, progressive abstraction, practice consolidation. Create situations, general concepts; identify applications, understand concepts. Highlight the concept of mathematics