所谓种子课就是“可供迁移,可供生长的关键课”。“生长课借势生长”。那么在运算的教学中,有没有这样的规律可循呢?笔者试图作些梳理和思考,供大家探讨。小学阶段,一共学习“加、减、乘、除”四种运算。横向看这四种运算,“加法”无疑是最重要、最关键的课,加法的意义是一节种子课。从纵向看,每一种运算的意义教学也是非常重要的,可谓是扎根的课,运算的意义是继续学习运算法则和运算律的基础。现 The so-called seed lesson is “a key lesson for migration and growth.” “Growth class potential growth ”. So in the operation of teaching, there is no such rule to follow it? I try to make some combing and thinking for your discussion. Primary stage, a total learning “add, subtract, multiply, divide ” four kinds of computing. Look at these four operations horizontally, “Addition ” is undoubtedly the most important and crucial course, the meaning of addition is a seed class. From a vertical perspective, the meaning of each operation of teaching is also very important, can be described as rooted in the class, the meaning of the operation is to continue learning algorithms and algorithms based on the law. Now