所谓“问题串”就是在一定的学习范围或主题内,教师围绕一定学习目标或某一中心问题,按照一定逻辑结构而精心设计的一组问题.“问题串”教学将学生置于学习的主体,努力为全体学生生动、活泼、主动地发展提供条件,促进学生乐意并积极的投入到自主探究性的数学活动中去,把课堂还给学生,在快乐的时空中放飞学生的智慧,务实学生的基础性学力,培养 The so-called “string of questions ” is a group of questions designed by a certain logical structure around certain learning objectives or a certain central question within a certain learning scope or theme. " In the main body of learning, we strive to provide conditions for all students to lively, lively and proactive development, promote students’ willingness and actively devote themselves to self-exploration and mathematics activities, return the classroom to students, and fly students in a happy time and space Wisdom, pragmatic students basic learning skills, training