“植树问题”一课是新改版的人教版五年级数学上册的内容,也是模型建构思想体现得较为明显的一节典型课例。受到普遍认可的教学的基本思路是:创设实际问题的情境,抽象出植树问题的数学模型,在求解和验证的过程中进一步改进和完善植树模型,最后加以拓展应用。但是,我们应当看到这种思路更多的是关注教师怎样教,而对学生的数学学习具有怎样的影响,这个问题并没有很好地解决。华东六省一市小学数学第十六届课堂教学观 “Tree planting problem ” lesson is a new revision of the PEP fifth grade mathematics on the content of the book, but also the model construction thought is reflected in a more obvious example of a typical lesson. The basic idea of ​​universally accepted teaching is to create a situation of practical problems, to abstract the mathematical model of tree planting problem, to further improve and perfect the tree planting model in the process of solving and verifying, and finally to expand its application. However, we should see that this idea is more concerned with how teachers teach, and how they affect the students’ mathematics learning. This problem is not solved well. East China six provinces and one city primary school mathematics classroom teaching concept