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数学教师为了体现新课程的精神,凸显学生的自主性、能动性、独立性和创造性,在数学课堂中广泛应用合作学习的教学方式,特别是公开课、汇报课、演示课上,执教者都有意识地设计了合作学习这个环节,但是由于种种原因,这种教学形式很多时候都是流于形式。笔者拿最近听的两节课作了个比较,两节课同样都是教学认识负数,并且都是北师大的教材。【案例1】导入生活中的负数,认识温度计,读温度计的数值(先出示正值,然后是0,再出示负值),记录学生读出的
In order to embody the spirit of the new curriculum, mathematics teachers emphasize the autonomy, initiative, independence and creativity of students, and apply the teaching methods of cooperative learning extensively in mathematics classrooms, especially in open class, report class and demonstrative class. Designed cooperative learning in this session, but for various reasons, this form of teaching is often mere formality. The author recently took two classes to make a comparison, two classes are also teaching a negative number, and are all teaching materials at Beijing Normal University. 【Case 1】 Import negative numbers in life, know the thermometer, read the thermometer values (first positive, then 0, and then negative), record the students read