小学数学教材中设置有很多情境图,并要求学生结合图意列出两道算式(一图二式)或四道算式(一图四式)。作为教师,应挖掘教学实例“一图四式”背后的价值,对焦算式之间的关系,促进学生在原有经验的基础上积累新的经验,把掌握的知识内化为能力。 Primary school mathematics textbooks set a lot of situation maps, and require students to combine two schemas listed in the formula (one figure two) or four (one figure four). As teachers, we should excavate the relationship between the value and the focus calculation formula behind the teaching example “one type of four patterns ”, promote the students to accumulate new experience based on the original experience, and turn the mastered knowledge into ability.