从碎片到体系：初中数学全等三角形大单元教学初探

From Fragmentation to System: A Preliminary Exploration of the Teaching of Congruent Triangles in Junior High School Mathematics as a Large Unit

摘要: 随着新课程改革的深入推进，数学核心素养的培养成为教育热点，知识的逻辑性和整体性备受关注，大单元教学通过整体化的设计，将有关模块的知识点或者特定的主题进行整合，充分展示了数学知识的逻辑性。基于大单元教学理念，结合《义务教育数学课程标准(2022年版)》，以人教新版《全等三角形》单元为例，从教学目标、内容选择、任务设置及作业设计等方面，系统构建全等三角形的大单元教学框架，旨在促进学生对几何知识的整体理解与核心素养的全面发展。

Abstract: With the in-depth advancement of the new curriculum reform, the cultivation of core mathematical literacy has become a hot topic in education. The logic and integrity of knowledge have received significant attention. The large-unit teaching approach integrates relevant module knowledge points or specific themes through holistic design, fully demonstrating the logical nature of mathematical knowledge. Based on the concept of large-unit teaching and in line with the “Compulsory Education Mathematics Curriculum Standards (2022 Edition)”, taking the new version of “Congruent Triangles” unit in the People’s Education Edition as an example, this paper systematically constructs a large-unit teaching framework for congruent triangles from aspects such as teaching objectives, content selection, task setting, and homework design, aiming to promote students’ overall understanding of geometric knowledge and the comprehensive development of core literacy.