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教学片段实录师:下面我们共同来研究三角形的面积计算方法。小组合作的要求如下:a.利用你们小组的三角形学具,先独立思考能把它转化成已学过的什么图形。b.把你的方法与小组成员进行合作交流,共同验证。c.选择合适的方法合作交流汇报。(学生小组合作讨论,动手操作,教师巡视参与并给予适当的指导。让部分小组上黑板展示)师:同学们已经用不同的方法转化成了我们学过的图形,哪一个小组先派代表给同学们讲解,其他小组的同学可以随时提问。
Teaching footage Record Division: Here we work together to study the calculation of the area of the triangle. The teamwork requirements are as follows: a. Using your group’s triangular learning tools, think independently of what it can convert to what you have learned. b. Share your method with team members for verification. c. Select the appropriate method of cooperation and exchange of reports. (Group discussion, hands-on, teacher-patrol participation and proper mentoring.) Letting some groups on the blackboard show Teacher: The classmates have been transformed into the graphics we have learned in different ways. Which group sent representatives first Students explain that other groups of students can ask questions at any time.