初中生活数学类拓展性课程课堂数学活动特征研究--基于名师教学视频分析

A Study of Mathematics Activities of a Life-Oriented Mathematics Enrichment Curriculum in Junior High School Classrooms--Based on the Video Analysis of Expert Teachers

从数学活动视角出发,以省级名师拓展性课程课堂教学展示课为研究对象,对初中生活数学类拓展性课程课堂数学活动设计及组织特征进行分析.研究发现生活数学类拓展课中,数学活动设计需逐层经历五层次数学化全过程,不仅在情境层次与应用层次加强了生活与数学的双向联系,更侧重于指涉层次与形式层次以突出数学本质;课堂呈现“两环五步”式学习模式彰显学为中心理念,“动静”结合的教学互动以引导学生“数学地思维”.研究建议在生活数学类拓展课中,整体有序地设计五层次数学化活动,为学生搭建数学“再创造”的深度学习路径;有效耦合数学现实与形式,以充分发挥数学学科育人功能;师生共建教学共同体,引导学生亲历数学化过程以促进素养形成.

From the perspective of mathematics activity,we studied the demonstration lessons of provincial expert teachers and analyzed the design and organizational characteristics of mathematics activities in a junior high school life-oriented mathematics enrichment curriculum.It was found that the design of mathematics activities centered on the theme of life goes step-by-step through the five-level process mathematicization and focuses on the level of reference and form in order to highlight the essence of mathematics.The organization of activities reflects the learning model of“two links and five procedures”and teaching interaction is characterized by the combination of“static and dynamic”so as to lead students to“think mathematically.”In this study,we suggest designing the five levels of mathematics activities in a holistic and orderly way,combining the reality and form of mathematics effectively,embodying the moral value of life-oriented mathematics,building a joint teaching community of teachers and students,building a deep learning path for students to achieve mathematics“re-creation,”and guiding students to go through the process of mathematics to promote mathematical core literacy.