《数学课程标准》明确指出:教师的任务就是创设教学情境,激发学生的学习兴趣,诱导学生投入到丰富多彩、充满活力的数学学习活动中去,让学生亲身经历数学知识的形成过程,也就是经历一个丰富、生动的思维活动过程,经历一个实 The Standard of Mathematics Curriculum clearly states that the teacher’s task is to create a teaching situation, stimulate students’ interest in learning and induce students to devote themselves into colorful and energetic mathematics learning activities so that students can experience the formation of mathematical knowledge firsthand Experience a rich, vivid process of thinking activities, through a reality