《全日制义务教育数学课程标准(实验稿)》在课程实施建议中明确指出:“数学教学,要紧密联系学生的生活实际,从学生的生活经验和已有的知识出发,创设生动有趣的情境,引导学生开展观察、操作、猜想、推理、交流等活动,使学生通过数学活动,掌握基本的数学知识和技能,初步学会从 Full-time compulsory education mathematics curriculum standards (experimental draft) ”in the course of implementation of the recommendations made it clear that:" Mathematics teaching, we must closely contact with students ’actual life, starting from the students’ life experience and existing knowledge, to create vivid and interesting Situation, guide students to observe, operate, guess, reasoning, communication and other activities, so that students through mathematical activities, master the basic mathematical knowledge and skills, the initial learning from