数学教师必须不断地估价课程的范围(广度)。范围回答教什么的问题。范围的概念主要是指所教科目、进程和态度的广度。数学课程的范围依教师对每个学习单元的计划,可能宽些或者窄些。 Math teachers must constantly evaluate the scope (breadth) of the course. Range answers questions about what to teach. The concept of scope mainly refers to the breadth of subjects, processes, and attitudes taught. The scope of mathematics courses may be broader or narrower depending on the teacher’s plan for each unit of study.