当代著名的认知心理学家诺曼说:“真奇怪,我们期望学生学习,然而却很少教他们如何学习;我们希望学生解决问题,却很少教他们解决问题的思维策略。”长期的教学实践证明,加强弱智学生的操作学习是弥补这一缺陷的有效途径之一。操作活动,指的是利用教具、学具等教学媒体,通过亲身实践,经过观察、分析得出关于数学事实的某种猜想和结论的过程。操作学习符合弱智学生的认知规律,有利于激发他们的学习兴趣,有利于教给学生探求知识的方法,学 Norman, a famous contemporary cognitive psychologist, said: “It’s weird that we expect students to learn, but seldom teach them how to learn. We want students to solve problems, but seldom teach them ways to solve problems.” " Long-term teaching practice proves that strengthening the operation and learning of mentally handicapped students is an effective way to remedy this defect. Operational activities refer to the process of using the teaching aids such as teaching aids and learning aids to obtain certain conjectures and conclusions about mathematical facts through their own practice, observation and analysis. Operational learning is in line with the cognitive rules of mentally handicapped students, is conducive to stimulating their interest in learning, is conducive to teaching students to explore knowledge, learning