《数学广角》是人教版《数学》教材中一个独有的小单元。它系统而有步骤地渗透数学思想方法,尝试把重要的数学思想方法通过学生日常生活中最简单的事例呈现出来,并运用操作、实验、猜测等直观手段解决这些问题。笔者为探寻这一小单元的教学策略,专门组织了课例研讨活动。一、教学片段与评析(一)激趣引入:做事要明确先后顺序师:上课之前先做一个小调查,你们晚上几点睡觉?睡觉之前做些什么 “Wide angle of mathematics” is a unique small unit in the “mathematics” teaching material of PEP. It systematically and infiltrating mathematic thinking method step by step, trying to present the important mathematical thinking method through the simplest examples of students’ daily life, and using the intuitive means such as operation, experiment and speculation to solve these problems. To explore this small unit of teaching strategies, the author organized a case study. First, the teaching fragments and evaluation (A) the introduction of excitement: Things to be clear Order: Teacher before class to do a small survey, what time do you go to bed at night? What to do before going to sleep