《数学课程标准》要求学生学有价值的知识,有实用性的知识,促使学生的发展,提高课堂教学的有效性。所谓的课堂教学有效性就是说在数学教学时,利用教学活动,让孩子们在学习上有着明显的提高和进步,通过数学课堂教学活动,使学生在数学上有提高,有进步,有收获。它既关注学生当前的发展,又关注学生未来的发展,可持续发展。有效的课堂教学是通过课堂教学活动,让学生在认知和情感上均有所发展。因此,广大教师既要考虑 “Mathematics curriculum standards” require students to learn valuable knowledge, practical knowledge, to promote the development of students and improve the effectiveness of classroom teaching. The so-called effectiveness of classroom teaching means that in the teaching of mathematics, the use of teaching activities, so that children have a marked improvement and progress in learning, through mathematics classroom activities to enable students to improve in mathematics, progress and gains. It not only pays attention to students ’current development, but also pays attention to students’ future development and sustainable development. Effective classroom teaching is through classroom teaching activities, so that students have both cognitive and emotional development. Therefore, the majority of teachers should consider it