新理念下的数学教学,应结合具体的数学内容,尽量采用“问题情境——建立模式——解释——应用与拓展”的模式展开。新的课程标准强调:“学生是学习的主人,教师是学生学习的组织者、引导者和合作者。”教师要从一个支配者的权威地位,向数学活动的组织者、引导者、合作者的角色转换,表面上看似乎压缩了教师的 The mathematics teaching under the new idea, should combine the concrete mathematics content, try to adopt “ problem situation - establishment model - explanation - application and expansion ” model development. The new curriculum standard emphasizes: “Students are the masters of learning, and teachers are the organizers, guides, and collaborators of student learning.” “Teachers must move from an authoritative position to the organizers and guides of mathematics activities.” The role change of collaborators seems to have compressed the teachers