【教材现状】传统教材将应用题作为独立的板块,集中按“类”编排,教师有“例”可讲,学生有“模”可仿。《数学课程标准》理念下的现行教材改变了传统编排方式,精心选择现实的、有意义的、与学生生活联系密切的、与计算意义一致的题材,将解决问题融于计算教学中,通过创设问题情境,把需要解决的问题与计算的意义,规则等的教学结合起来,使计算教学和活动本身成为对“问题”探索和解决的过程。 The status of teaching materials】 【traditional teaching materials will be applied as an independent plate, concentrated by “class ” choreography, teachers have “case ” to speak, students have “model ” can be imitated. The existing teaching materials under the concept of “Mathematics Curriculum Standard” have changed the traditional way of arrangement, meticulously selected realistic and meaningful subjects closely related to students’ lives and calculated meaningually, and solved the problems in calculating teaching through creating Problem situations, combine the problems to be solved with the teaching of the meanings and rules of calculation, and make the calculation teaching and activities themselves become the process of exploring and resolving “problems ”.