杜威说:“教学不仅仅是种告诉,更不是简单地告诉。教学是学生在教师的引导下对实践的一个体验、感悟过程。”体验是一种情感真正投入的学习活动,通过体验达到一种自我感悟、自我认识、自我升华的内化效果。让学生在体验中感受数学的魅力,是学生生命的重要组成部分。认识毫米和分米是学生在学习了厘米和米的认识的基础上学习的新的计量长度的单位。本节课的教育价值主要是让学生真 Dewey said: “Teaching is not just a kind of telling, not just telling. Teaching is a process in which students experience and comprehend under the guidance of a teacher.” "Experiencing is a kind of learning activity in which emotions are really invested. Through experience To achieve a self-perception, self-knowledge, self-sublimation of the internalization effect. Let students experience the charm of mathematics in the experience, is an important part of student life. Understanding millimeters and decimeters is a unit of measure for students to learn on the basis of their knowledge of centimeters and meters. The educational value of this lesson is mainly for students to really