小学数学教学中的实物图、线段图、思路图、几何图形等,如用幻灯演示这些图形,便可以取得比原图更好的教学效果。 1、实物图。实物图的特点是形象、直观,但位置固定,是静止的形象。小学数学课本第一册,讲得数是5的加法式题4+1=5时,是用4个小鸭子和一个小鸭子的图讲的。如果用幻灯先映出4个小鸭子,然后把一个小鸭 Primary school mathematics teaching in the physical map, line drawings, ideas, geometry, such as the use of slide shows these graphics, you can get better than the original teaching results. 1, the physical map. Physical map is characterized by the image, intuitive, but the location is fixed, is still image. Primary school mathematics textbook first volume, speaking number is 5 plus formula 4 + 1 = 5, with four ducklings and a duckling diagram. If you use slideshow to show 4 little ducks first, then put a duckling