拜读了《小学教学设计》2005年第7、8期刊登的《到底选哪一个》一文,笔者也想就文中的问题谈谈个人的看法。题目中,挖出来的圆锥形孔与圆柱在形状上等底等高,这点是显而易见的。此容器的容积等于这个圆锥形孔的体积,也是无异议的。争议的焦点在对容器(即挖孔以后的物体)体积的 Read the “primary school teaching design” published in 2005 No. 7, 8, “in the end choose which one,” a text, I also want to talk about the text of the issue of personal views. In the title, it is obvious that the hollowed-out conical hole is the same size as the cylinder at the bottom of the cylinder. The volume of this container is equal to the volume of this conical hole, is also no objection. The focus of controversy is on the volume of the container (ie the object after digging holes)