培养和发展学生的逻辑思维能力是小学数学教学的重要任务,而逻辑思维范畴中的逆向思维又是思维训练的难点.在小学数学的教材中,需要运用逆向思维学习的内容,在低中高各个年级都有.由于学生习惯于顺向思维,因而在遇到需要用逆向思维解答应用题时,往往感到困难.因此,培养学生逆向思维的良好品质是极为重要的.笔者认为主要应从以下几个方面进行培养和训练. 一、训练学生换角度理解题中的数量关系低年级教学中的“比多”、“比少”应用题,由于受思维定势的消极影响,学生往 The training and development of students' logical thinking ability is an important task in primary school mathematics teaching, and the reverse thinking in the category of logical thinking is the difficulty of thinking training.In elementary school mathematics textbooks, it is necessary to use the content of reverse thinking study, Grade. Because students are accustomed to forward thinking, and therefore often need to use reverse thinking to solve the problem, it is often difficult. Therefore, to develop students good quality of reverse thinking is extremely important .I think the main should be from the following Training and training.First, the training of students for the angle to understand the relationship between the number of problems in the lower grades of teaching “more than”, “less than” application questions, due to the negative impact of thinking set, students to