“植树问题”是青岛版三年级下册“智慧广场”的内容,这类问题规律性强,如果能掌握规律,计算起来挺简单的。可是有很多学生因为理解能力较弱,在他们的头脑中形成不了模型,对植树问题中的数量关系难以接受,在他们还没有完全理解怎么植树时又出现了摆花盆、锯木头、求路灯;刚学会算棵数,又要算总长,还要求间隔数;明白了直线上种树,又要学封闭图形上种树,到底要减还是加,很多学生似乎永远搞不 “Tree planting problem ” is the third edition of Qingdao version “wisdom square ” content, the law of such problems is strong, if can grasp the law, it is quite simple to calculate. However, many students can not form models in their minds because of their weak ability to understand. Therefore, it is difficult to accept the quantitative relationship among the tree planting problems. When they have not fully understood how to plant trees, they have put flower pots, sawn woods and street lamps ; Just learned to count the number of trees, but also to count the total length, also asked the number of intervals; understand the tree planting straight line, but also learn to seal the tree on the graphics, in the end to reduce or increase, many students seem to never do