基于问题链的数学概念教学设计——以“二元一次方程组”为例
Mathematical Concept Teaching Design Based on Problem Chain—Taking “System of Linear Equations in Two Unknowns” as an Example

数学概念是筑起整个数学大厦的基石，反映了数学对象的本质属性及内在联系。而数学概念教学则是揭示概念生成、促进学生理解概念本质的有效途径。本文以“二元一次方程组的概念教学”为例，依据学科思维、教学目标及学生认知水平，以层层递进的问题链漾起学生思维的涟漪，启发学生思考，推进教学进程，进而提升学生的数学学科核心素养。
Mathematical concept is the cornerstone of the whole mathematical edifice, reflecting the essential attributes and internal relations of mathematical objects. The teaching of mathematical concepts is an effective way to reveal the generation of concepts and promote students to understand the essence of concepts. This paper takes “the concept teaching of System of Linear Equations in Two Un-knowns” as an example, and according to the discipline thinking, teaching objectives and students’ cognitive level, the ripple of students’ thinking is rippled by the step-by-step question chain, which inspires students to think, promotes the teaching process, and then enhances students’ core literacy in mathematics.