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1引言《义务教育数学课程标准(2011年版)》指出:“学生的学习应当是一个生动活泼的、主动的和富有个性的过程.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.”[1]今天,启发、探究、合作的教学活动方式在数学课堂中已经得到重视.显然,数学课堂上师生的活动主要是围绕数学任务展开的.数学任务是将学生的注意力集中在某一
1 Introduction “Mathematics Curriculum Standards for Compulsory Education (2011 Edition)” points out: “Students’ learning should be a lively, active and individualized process. Teaching activities are the process of teachers and students’ active participation, interaction and common development. The effective teaching activity is the unity of student learning and teacher education, the student is the main body of learning, and the teacher is the organizer of learning."[1] Today, the way of teaching activities of inspiration, inquiry, and cooperation has been valued in the mathematics classroom. Obviously, the activities of teachers and students in mathematics classes are mainly focused on the task of mathematics. The task of mathematics is to focus students’ attention on a certain