全日制普通高中数学新教材 (试验本 )立体几何有两套方案 ,即高中数学第二册 (必修本 )下Ａ和下Ｂ .“下Ａ”虽有适当的调整和精减 ,但整个体系和传统内容基本一样 .而改革力度最大的是“下Ｂ” ,由于引进了空间向量及其运算性质 ,使得立体几何的课程体系、教材结构、解题方法 The full-time regular high school mathematics new textbook (test book) has two sets of three-dimensional geometry: high school mathematics second volumes (required), lower A and lower B, and “lower A”, with appropriate adjustments and reductions, but the entire system Basically the same as the traditional content. The most influential reform is “under B.” Because of the introduction of space vectors and their computational properties, the three-dimensional geometry curriculum system, teaching material structure, and problem solving methods