《数学课程标准》提出“对学生数学学习的评价,既要关注学生知识与技能的理解与掌握,更要关注他们的情感与态度的形成和发展;既要关注学生数学学习的结果,更要关注他们在学习过程中的变化和发展”。本文结合友善用脑的教育思想,我们的数学课堂评价承担着对孩子学习兴趣的激发、学习方法的指导、学习能力提升和学习效果的肯定任务。这种评价应该是一种积极地,正面的,传达了老师对孩子关心、鼓励、与帮助的情感!笔者在教学实践中,尝试“三段评价法”即1.预习阶段评 The standard of mathematics curriculum proposes that the evaluation of students’ mathematical learning should not only pay attention to the understanding and mastery of students’ knowledge and skills, but also pay attention to the formation and development of their emotions and attitudes. They should not only pay attention to the results of students’ mathematical learning but also Pay attention to their changes and development in the learning process. “ In this paper, the friendly thinking of using the brain, our evaluation of mathematical classroom bear the excitement of children’s interest in learning, guidance of learning methods, learning ability and learning affirmed tasks. This evaluation should be a positive, positive, and convey the teacher’s feelings of concern, encouragement and help to children! In the teaching practice, the author attempts to ”three-stage evaluation method" that is 1. Preview stage evaluation