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实效性是指生效时间和失效时间。课堂实效就是让学生获得发展,让学生发展的课堂教学才是有实效的。这里的发展有知识技能、过程方法、情感态度价值观等,即三维教学目标的落实与达成。一、课堂“实效性”的现实困扰三维目标的割裂化;教学内容的泛化;教学活动的外化;教学效率的低下化;教学方式的形式化;教学本质的淡化。有的课堂,一些数学内容被机械地套上了情境,牵强附会地联系实际,过多地强调生活来源,其结果是既浪费了宝贵时间,又妨碍了学生对数学知识的真正理
Effectiveness refers to the effective time and failure time. The effectiveness of the classroom is to allow students to develop, so that students develop classroom teaching is effective. Here the development of knowledge and skills, process methods, emotional attitudes and values, that is, the implementation of three-dimensional teaching objectives and reached. First, the classroom “reality ” reality plagued the three-dimensional goal of fragmentation; teaching content of the generalization; teaching activities of externalization; teaching efficiency of the lower; formal teaching methods; teaching essence of desalination. In some classrooms, some mathematical contents are mechanically set in contexts, they are far-reaching and practical. They emphasize too much on the sources of living. As a result, they have wasting valuable time and hampering the students’ genuine knowledge of mathematics