学生以前学表内乘除法,运用乘法口诀就能求出积和商,而学有余数的除法就不那么容易。为搞好这一内容的教学,我提出三点建议: (一) 安排准备练习,使学生掌握用乘法口诀计算有余数除法的思考方法。课前,除安排“定数背口诀”(如三一得三,三二得六,三三…,三四…)外,还安排如 Before the student multiplication and division in the school form, multiplication formula can be used to find the product of the sum, and learn the division of the remainder is not so easy. To improve the teaching of this content, I put forward three suggestions: (1) Arrange for preparation exercises to enable students to master the thinking method of dividing the remainder by the multiplication formula. Before class, in addition to arranging the “fixed number of back formulas” (such as Trinity three, three two two six, three three ..., three four ...), but also arrangements such as