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教学案例以下是二年级下册《锐角与钝角》一课中的教学片断。在完成新课的教学后,教师布置学生做课本第39页第1题。1.说一说有哪些角.师:同学们,在这些物件上,你找到哪些角?生1:我发现背心的衣领上有一个锐角。生2:我发现跳高架上有两个直角。
Teaching case The following is a second grade two volumes “sharp angle and obtuse angle” lesson in the lesson. After completing the teaching of the new lesson, the teacher arranges the students to do the first question on page 39 of the textbook. 1. What are the corners? Teacher: Students, where do you find these corners? Student 1: I found an acute angle on the vest's collar. Students 2: I found two right angles to the jump overhead.