义务教育数学课程标准(2011版)以下简称(新课标)指出,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.学生的学习应当经历观察、实验、猜测、计算、推理、验证等活动过程.这明确了课堂教学应该把学生的学习作为中心,把学生经历的学习过程作为教学的关键. Compulsory Education Mathematics Curriculum Standard (2011 Edition) The following abbreviations (New Curriculum) pointed out that effective teaching activities are the unity of student learning and teacher education, students are the main body of learning, and teachers are the organizers, guides and collaborators of learning. Students’ learning should go through the process of observation, experiment, speculation, calculation, reasoning, verification, etc. This makes it clear that classroom teaching should take students’ learning as the center and take the students’ learning process as the key to teaching.