理解为先教学设计模式通过“以终为始”逆向设计促进学生深入而持久地理解,是主动学习和意义学习的有效模式,符合新课程改革倡导的以学生为主体的理念。该模式的学习目标、教学模式、备课步骤对小学数学课堂教学有一定的借鉴意义。 It is understood that the first model of instructional design promotes students’ in-depth and long-term understanding through “reverse design”, which is an effective model of active learning and meaning learning, which is in line with the concept of student-centered advocated by the new curriculum reform. The model of learning objectives, teaching mode, preparation steps for primary school mathematics classroom teaching has some reference.