练习,是教学流程中重要的一个环节,是课堂教学的延伸和继续,合理的练习是学生学习数学,发展思维的一项经常性的实践活动,也是师生信息交流的一个窗口。作为新课标下的数学练习设计,应如何体现它的效度,突出现实性、发展性和活动性?一、拓展自主空间,还学生一个自由的学习环境学生是教育的主体,是数学学习的主人。自主 Exercises are an important part of the teaching process. They are the extension and continuation of classroom teaching. Reasonable practice is a regular practice for students to learn mathematics and develop their thinking. It is also a window for teachers and students to exchange information. As a new curriculum standard under the practice of mathematics design, how to reflect its validity, highlighting the reality, development and activity? First, to expand their own space, but also students a free learning environment Students are the main body of education is mathematics learning The owner. Autonomous