“双减”背景下初中数学课堂诊断与改进——以“垂径定理”教学为例

On the Diagnosis and Improvement of Middle School Mathematics Classroom under the Background of“Double Reduction”——Taking the Teaching of“Vertical Diameter Theorem”as an Example

“双减”背景下打造高效课堂是每一位数学教师的理想目标.通过课堂诊断发现问题,并对课堂教学进行优化和设计,可以达到高效数学课堂的要求.从“垂径定理”一课出发,在实践中通过课堂诊断的方法持续改进数学教学,在反思中优化教师的教学设计和问题设计,聚焦课堂教学效果,完善评价体系,提升教师自身的教学研究能力,从而实现更高效的数学教学课堂.

Creating an efficient classroom under the background of“double reduction”is the ideal goal of every mathematics teacher,and the requirements of an efficient mathematics classroom can be met by discovering problems through classroom diagnosis,and optimizing and designing them.Starting from the lesson of the vertical path theorem,we continue to improve mathematics teaching through classroom diagnosis in practice,optimize teachers’teaching and problem designs in reflection,focus on classroom teaching effects,improve the evaluation system,and improve teachers’own teaching and research capabilities,so as to achieve a more in-depth and efficient mathematics classroom.