《数学课程标准》明确提出:有效的数学学习活动不能单纯地依赖模仿与记忆,自主探索是学生学习数学的重要方式。引导学生去发现、去主动探索是数学教学的有效途径和方法,自主探索更有利于学生更好的掌握知识和培养能力。因此,在数学课堂教学中,应该以学生为主体,充分 “Mathematics Curriculum Standard” clearly put forward: Effective mathematics learning activities can not simply rely on imitation and memory, self-exploration is an important way for students to learn mathematics. Guide students to discover, to take the initiative to explore is an effective way to teach mathematics and methods of self-exploration is more conducive to students better grasp of knowledge and ability. Therefore, in mathematics classroom teaching, students should be the main body, full