《数学课程标准》实施十多年,我们在数学学科的教学中也由原先强调的“双基”教学转变为重视“四基”的教学,强调了基本思想的渗透和基本活动经验的积累,试图改变知识本位的观念。而在研究探究性学习的今天,我们的教学对合情推理等方法仍然没有予以足够的重视,而这些恰恰是数学素养的重要组成部分。《数学课程标准》指出:推理能力的发展应贯穿于整个数学学习过程中。鉴于小学生的认知特点,可在小学数学教材中大量使用合情推理 The “Mathematics Curriculum Standard” has been implemented for more than ten years. In the teaching of mathematics, we have also changed from “double base” teaching to “four base” teaching, emphasizing infiltration of basic ideas and basic activities The accumulation of experience, trying to change the concept of knowledge-based. However, in the study of inquiry-based learning, our teaching still does not pay enough attention to the methods such as reasoning and reasoning, and these are precisely the important components of mathematical literacy. Mathematical Curriculum Standard states: The development of reasoning ability should be run through the entire mathematics learning process. In view of the cognitive characteristics of primary school students, it is possible to make a lot of use of reasonable reasoning in primary school mathematics teaching materials