论文部分内容阅读
教科书中“充分条件”与“必要条件”的概念是直接给出的,学生即不理解为什么要提出“充分条件”与“必要条件”的概念,也没有经历概念形成的提炼过程,甚至对概念的表述也是一知半解,只能是死记硬背概念而不能灵活运用。本文通过创设情境,对教学进行精心设计,让学生体会概念的形成过程,体会概念的内容以及其名称的合理性,也算是一次对概念教学的尝试.
The concept of “sufficient condition” and “necessary condition” in the textbook is given directly, and the student does not understand why the concept of “sufficient conditions” and “necessary conditions” is proposed, nor does he experience the concept The formation of the refining process, and even the expression of the concept is also ill-informed, can only be rote concepts and can not be flexibly applied. This article through the creation of context, careful design of teaching, let students understand the concept of the formation process, understand the concept of the content and the rationality of its name, can be considered an attempt to conceptual teaching.