培养学生初步的逻辑思维能力是义务教育小学数学“课程标准”的教学目标之一,即培养学生初步的分析、综合、比较、抽象、概括能力,对简单的问题进行判断、推理,逐步学会有条理、有根据地思考问题,同时培养思维的敏捷和灵活以及广度等品质。所以,在教学中既要了解和研究学生的思维特点,又要遵循学生的认知规律,提高课堂的有效性,使其全面达到教 To cultivate students ’initial logical thinking ability is one of the teaching objectives of compulsory education elementary school mathematics “curriculum standard ”, that is, to train students’ initial analysis, synthesis, comparison, abstraction and summarization abilities, to judge simple reasoning, Learn to think in good order and thought-provokingly, while developing the agility, flexibility, and breadth of thinking. Therefore, it is necessary to understand and study the thinking characteristics of students in teaching, but also to follow the cognitive rules of students to improve the effectiveness of the classroom so that it can be fully taught