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复习提要几何初步知识是小学数学研究数与形的关系的基本内容,是今后进一步学习几何知识的重要基础。通过整理和复习,要掌握所学过的平面图形、立体图形的直观形象,掌握各种图形的特征和性质,以及各种图形之间的联系;要理解并区分周长与面积的概念,正确地应用公式计算平面图形的周长和面积;对于表面积和体积的计算,首先要明确表面积和体积的概念,进而确定计算步骤。要注意对具体问题作具体分析,合理选择计算方法,灵活地解答一些简单的实际问题。
Review Synopsis Elementary knowledge of geometry is the basic content of the relationship between number and shape of elementary mathematics research, which is an important foundation for further studying geometric knowledge in the future. Through the collation and review, to master the plane graphics, three-dimensional graphics intuitive image, grasp the characteristics and nature of various graphics, as well as the relationship between the various graphics; to understand and distinguish between the concept of perimeter and area, the correct To calculate the perimeter and area of a planar graphic, use the formula to calculate the surface area and volume. First, the concept of surface area and volume should be clarified to determine the calculation steps. Attention should be paid to the specific analysis of specific issues, a reasonable choice of calculation methods, flexible to answer some simple practical problems.