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组合图形面积计算问题,是小学数学教学中一个非常重要的问题。组合图形面积的教学,对于培养学生识别、分析图形,综合运用面积计算公式,发展空间观念和初步的逻辑思维能力都具有十分重要的意义。根据年龄特征,小学生解答组合图形面积计算问题时往往从静态上去考虑,然而解决一些实际问题则需要把这些图形进行转化,这需要有一定的抽象思维能力。运用电教手段,可以为学生架设起由形象思维向抽象思维过渡的桥梁,提高解题能力。一、化繁为简把复杂的问题或形式转化成为较为简单的问
Combinatorial graphics area calculation problems, is a very important issue in elementary mathematics teaching. The combination of graphic area teaching is of great significance for students to recognize, analyze graphics, comprehensively use the area calculation formula, develop the concept of space and the initial logical thinking ability. According to the characteristics of age, the pupils often consider the calculation of the area of the combined graphics area from a static perspective. However, some practical problems need to be transformed into the graphics, which requires some abstraction ability. The use of audio-visual means can be set up for the students from the image of thinking to the bridge of abstract thinking to improve the ability to solve problems. First, to simplify the complicated problems or form into a simpler question