小学数学新课程标准中明确指出,“教学活动是师生积极参与、交往互动、共同发展的过程。有效的教学活动是学生学与教师教的统一,学生是学习的主体,教师是学习的组织者、引导者与合作者。”同时强调:“学生学习应当是一个生动活泼的、主动的和富有个性的过程。学生应当有足够的时间和空间经历观察、实验、猜测、计算、推理、验证等活动过程。”在课堂教学中将师生互动有效地衔接起来,问题是关键。 Primary school mathematics new curriculum standards clearly pointed out that “teaching activities are active participation of teachers and students, interactive interaction and common development process.Effective teaching activities is the unity of student learning and teacher education, students are the mainstay of learning, teachers are learning Organizers, leaders and collaborators. ”“ At the same time, emphasize: ”Student learning should be a lively, proactive and personal process. Students should have enough time and space to observe, experiment, guess, calculate, Reasoning, verification and other activities. "The teacher-student interaction effectively in classroom teaching, the problem is the key.