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优化课堂教学的有效性是当前深化课程改革的关键和根本要求,也是减轻学生过重负担的一项根本措施。《义务教育数学课程标准》指出:“人人学有价值的数学;人人都能获得必需的数学;不同的人在数学上得到不同的发展。”同时提出:“学生是数学学习的主人,教师是数学学习的组织者、引导者和合作者。”“数学教学活动必须建立在学生的认知发展水平和已有的知识经验基础之上。
Optimizing the effectiveness of classroom teaching is the key and fundamental requirement for deepening the current curriculum reform and a fundamental measure to reduce the excessive burden on students. The Standard of Compulsory Education Mathematics Curriculum states: ”Everyone learns valuable mathematics; everyone has the necessary mathematics; and different people get different developments in mathematics.“ ”At the same time, it states:“ Students learn mathematics Teachers, math learning organizers, guides and collaborators. ”" Mathematics teaching activities must be based on the level of cognitive development of students and based on existing knowledge and experience.