新课程改革以来,新的课程理念,新的课堂形式不断的涌入我们的视野。但这也让一些教师产生了错觉,进而产生了教学情境花哨离题、教学起点把握不准、降低教学目标要求、教学活动形式放任,这样的课堂看似精彩,却华而不实,对学生的发展不利。因此,如何在短暂的四十分钟内,提高课堂教学的有效性,既能够让学生体会到学习的快乐,有能够让学生在数学得到应有的发展,显得十分重要。 Since the new curriculum reform, new ideas of the curriculum and new forms of the classroom have constantly poured into our field of vision. However, this also gives some teachers illusion, resulting in a fanciful teaching situation, the teaching of the beginning is not allowed to grasp, to reduce the teaching objectives and requirements, the form of teaching activities to be laissez faire, this class seems wonderful, but flashy, detrimental to the development of students. Therefore, how to improve the effectiveness of classroom teaching in a short period of forty minutes can not only make students experience the joy of learning, but also make it very important for students to get the proper development in mathematics.