在小学数学中,多边形的学习到第七册告一段落了,以后便要学习体和圆的知识。因此,在进行期终复习时,有必要将以前学习的几何初步知识进行一次全面复习,把零散的知识加以整理,使之系统化,以加深学生对所学的几何概念、图形特征、计算公式的理解,从而提高学生的空间观念和分析问题、解决问题的能力。 In elementary school mathematics, the study of polygons came to an end in Volume VII, and later we had to learn the knowledge of the body and the circle. Therefore, during the final review, it is necessary to conduct a comprehensive review of the preliminary geometry knowledge previously learned, to organize the scattered knowledge and make it systematized so as to deepen students' understanding of the geometrical concepts, graphic features, formulas So as to improve the student's space concept and the ability to analyze and solve problems.