小学数学教学不仅要让学生获取数学知识和技能,还要注重培养学习数学的方法,基于已有的活动经验自主构建知识的活动,是我们数学教学的主要任务之一,引导学生自主建构知识时可从以下四个方面入手。一、抓诱发,让学生产生自主建构的动机在实际学习中,许多学生已经储备一定的的数学经验,但不能有效地主动构建新知。究其原因,主要是学生不能从认知中运用相关知识和经验。因此,在从事新课前,教师可以设计一些针对性较强的复习内容,创设与学生心理需求变化同步的学习情 Primary mathematics teaching should not only enable students to acquire mathematics knowledge and skills, but also pay attention to cultivating methods of learning mathematics. Constructing knowledge independently based on the existing activities and experiences is one of the main tasks of our mathematics teaching, guiding students to construct their own knowledge From the following four aspects. First, grasping induced, allowing students to build their own motivation In the actual learning, many students have a certain amount of mathematical experience, but can not effectively take the initiative to build new knowledge. The reason is mainly because students can not apply relevant knowledge and experience from cognition. Therefore, before engaging in a new class, teachers can design some highly targeted review contents and create a learning situation that is synchronized with changes in students’ psychological needs