统编教材中,对于简单几何体(柱、锥、台、球)体积的处理,观点同一,且成体系,既符合科学性,尤符合量力性。这一处理:建立单位正方体,规定体积单位以后,以公理形式给出长方体体积为基础,借助祖暅定理,以及运用已、未知矛盾在一定条件下可以转化的原则为指导思想,以处理柱、锥、台、球的体积。在这一处理过 In the unified textbooks, for the processing of simple geometry (columns, cones, tables, and balls), the viewpoints are the same and systematic, which is not only consistent with the scientific nature, but also particularly with the power. This process: after establishing a unit cube, specifying a volume unit, based on the cuboid volume given in the axiom form, using the ancestral hall theorem, and using the principle that the existing and unknown contradictions can be transformed under certain conditions as the guiding ideology to treat the column, The volume of cones, tables, and balls. In this process