根据题意画图,就可以把题目的条件、问题与数量关系生动地展现在图上,从而比较容易地看出解题的方法和途径。我在教学中有如下几点尝试,与大家分享。尝试一:巩固画图成果,逐步抽象过渡到线段图。例题:小明收集了一盒乒乓球,共4个,小红收集的乒乓球个数是小明的3倍。他们两人一共收集了多少个 According to the original drawing, you can put the topic of the conditions, the relationship between the number of issues and vividly displayed on the map, which is easier to see the way to solve problems and ways. I have the following points in teaching to share with you. Try one: to consolidate the drawing results, and gradually abstract the transition to the line map. Example: Xiaoming collected a box of ping pong, a total of 4, the number of small red table tennis is Xiaoming 3 times. How many of them were collected by both of them together?