数学教学要体现生活性,每个孩子都要学习与生活密切相关的数学知识,因此,在数学教学中,教师要联系生活实际,从学生的现有经验出发。构建主义认为,学生的学习活动是从现实出发的,经过反思,达到“数学化”的。这里的现实,是指学生的“经验”。它包含两个方面的内容。一方面,它表示学生已有的生活经验和知识经验。学生已有的生活经验和知识经验对他们理解数学知识和学习数学知识是十分重要的。另一方面,“经验”又表示学生的数学学习 In mathematics teaching, to embody life, every child should learn mathematics knowledge closely related to life. Therefore, in mathematics teaching, teachers should contact with the reality of life and proceed from the students’ existing experience. Constructivism holds that students’ learning activities are based on reality and after reflection they reach “mathematicalization.” The reality here refers to the student’s “experience”. It contains two aspects. On the one hand, it shows the student’s existing life experience and knowledge experience. The students’ existing life experience and knowledge and experience are very important for them to understand math knowledge and learn math knowledge. On the other hand, “experience” implies students’ math learning