大概念统摄下的数学单元教学设计探析——以初中函数为例

Analysis on Teaching Design of Mathematics Unit Based on Big Ideas System——Taking the Junior High School Function as an Example

“大概念”和“单元教学”是实现学科核心素养落地的两个关键词.大概念作为知识通往素养的桥梁,强调知识的意义理解与自主迁移,帮助学生形成良好的认知结构和思维方式.大概念统摄下的数学单元教学设计,关注单元的整体性、注重单元的结构化、强调单元的素养化,使数学单元层级更为清晰,数学单元设计核心更为明确,是发展学生核心素养的重要途径.其结构要素主要有:命名单元主题、明确大概念群、识别基本问题、制定单元目标、理清形成路径、设计学习活动等.进行大概念统摄下的初中函数单元教学设计,为大概念在素养本位单元教学中的落实提供了一种探索性思路.

“Big ideas”and“unit teaching”are the two key words to realize the core competencies of the discipline.Big ideas serve as a bridge from knowledge to competency,emphasizing the understanding of the meaning and independent transfer of knowledge and helping students to form a good cognitive structure and way of thinking.In the teaching design of the mathematics unit under the big ideas system,it pays attention to the integrity of the unit,the structure of the unit and the competency of the unit,making the hierarchy of the mathematics unit clearer and the core of the mathematical unit design clearer,which is an important way to develop students’core competency.The structure elements mainly include:naming unit themes,clarifying large concept groups,identifying basic issues,formulating unit goals,clarifying formation paths,designing learning activities,etc.The teaching design of junior high school function units under the integration of big ideas provides an exploratory idea for the implementation of big ideas in competency-based unit teaching.