“体积与容积”是小学数学图形与几何领域的重要基础性概念。同时这两个概念对于学生来说较难理解,也不易区分。特级教师郎建胜和青年教师陈敏凭借对课标和教材的深刻理解,加上丰富的教学经验和高超的教学艺术,引领学生在观察、实验、对比等数学活动中逐步建构起“体积与容积”的概 “Volume and Volume ” is an important basic concept in the field of elementary mathematics graphics and geometry. At the same time, these two concepts are harder for students to understand and not easy to distinguish. Prof. Jian-Sheng Lang, a top grade teacher, and Chen Min, a young teacher, lead the students in the process of observation, experiment, contrast and other mathematical activities by gradually building their understanding of the relationship between volume and volume by virtue of their profound understanding of course marks and textbooks, coupled with their rich teaching experience and superb teaching art. "Summary