一、引人新课时启发学生“说”在复习铺垫时,教师准备的内容要与所学的新知识紧密相联,简单明了,易于学生思考和回答,真正起到“铺路架桥”的作用。例如,第十册《最大公约数》这一节概念比较抽象,又容易混淆,学生难于掌握。教师在导入新课时出示:① 12的约数有哪些?② 18的约数有哪些?③ 12和18的公有约数有哪 First, the introduction of new lessons to inspire students, “said” When review bedding, teachers should be closely related to the new knowledge learned, simple and easy, easy for students to think and answer, and really play a “paving bridge” role . For example, the tenth volume, “the greatest common divisor,” is a somewhat abstract concept that is confusing and difficult for students to master. When introducing a new class, the teacher will show: ① What are the divisor of 12? ② What are the divisor of 18? ③ What are the common divisor of 12 and 18