“思维能力的发展是学生智力发展的核心,也是智力发展的重要标志”。因此,在小学数学课堂教学中要充分挖掘教材中的互逆因素,有机地训练和培养学生的逆向思维能力。可以提高学生的数学素养。 “The development of thinking ability is the core of students’ intellectual development and an important symbol of intellectual development ”. Therefore, in primary school mathematics classroom teaching should fully tap the reciprocity factors in teaching materials, organically train and develop students’ ability to reverse thinking. Students can improve their mathematical literacy.