新课程标准指出,小学数学课程应突出体现基础性、发展性和普及性,使数学教育面向全体学生。学生学习的内容应当是接近现实的、对生活实际有意义的、在知识的学习中具有挑战性的,这些内容更要有利于学生主动地进行观察、实验、猜测、验证、推理与交流等数学活动。 The new curriculum standard points out that primary mathematics curriculum should highlight the basic, developmental and universal, so that mathematics education for all students. The contents of student learning should be realistic, meaningful to life, and challenging in the learning of knowledge. These contents should be more conducive to students’ initiative in mathematics such as observation, experiment, speculation, verification, reasoning and communication activity.