新课标指出:有意义的数学学习必须建立在学生的主观愿望和知识经验的基础之上;有效的数学学习活动不能单纯地依赖模仿与记忆,动手实践、自主探索与合作交流才是学生学习数学的重要方式。小学高年级学生已积累了一些基本的生活经验与学习经验,已具备了初步自主探索与合作交流能力,必须进行强化和提升。笔者多年从事小学高年级特别是六年级数学教学,在高效课堂研究与探索中构建了一套操作性较强的新授课模式,估且命名为“开放式自主合作学习模 The new curriculum standard points out that meaningful mathematical learning must be based on the students ’subjective desire and knowledge and experience. Effective mathematical learning activities can not rely solely on imitation and memory. Hands-on practice, self-exploration and cooperation and exchange are students’ learning Mathematics is an important way. Primary school senior students have accumulated some basic life experience and learning experience, have acquired the ability of preliminary exploration and cooperation and exchange, and must be strengthened and promoted. The author for many years engaged in high school grade, especially the sixth grade mathematics teaching, efficient classroom research and exploration in the construction of a set of highly operational new teaching mode, estimated and named as ”open cooperative learning model