数学课程标准的基本理念中指出:学生的数学学习内容应该是现实的、有意义的、富有挑战性的,这些内容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.内容的呈现应采用不同的表达方式,以满足多样化的学习要求.有效的数学学习活动不能单纯地依靠模仿与记忆,? The basic concept of the mathematics curriculum standard states that students’ mathematics learning content should be realistic, meaningful, and challenging. These contents are conducive to students’ initiative to carry out mathematical activities such as observation, experimentation, guessing, verification, reasoning, and communication. Content should be presented in different ways to meet diverse learning requirements. Can effective mathematics learning activities simply rely on imitation and memory?