“力生于团结,事成于和谐。”教师在教学中善于创设和谐的情境,能激起学生对学习的兴趣,拉近学生与新知的距离,使其主动参与数学学习活动,在课堂上灵动发展。有效的情境,要既能让学生感到愉悦和谐,又能成为学生学习数学的良好素材,有利于促 “The force is born in unity, things into harmony. ” Teachers in teaching good at creating a harmonious situation, can arouse students interest in learning, to narrow the distance between students and new knowledge, to actively participate in math learning activities, in Smart development in the classroom. Effective context, both to make students feel happy and harmonious, but also can be a good material for students to learn math, help promote