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【片段回顾】(人教版《数学》五年级上册)师:平行四边形板报的面积怎样计算?你有什么猜想?你觉得需要什么数据,自己找一找,写在平行四边形纸上,把算式也写下来。1.每个学生利用教师提供的平行四边形板纸和测量工具,进行合理猜测。学生先独自思考,再与同桌同学利用手中的工具“平行四边形的板纸、直尺、方格纸”等,测量、讨论,提出各自对平行四边形面积计算的猜想。
[Review] (PEP Edition “Mathematics” fifth grade) Teacher: Parallelogram report how to calculate the area? Do you have any guess? Do you think what data you need to find their own look, written in parallelogram paper, the formula Write it down too. 1. Each student uses the parallelogram paper and measuring tools provided by the teacher for reasonable guesswork. Students first think, and then use the hands of the same classmate tools “parallelogram of cardboard, ruler, graph paper ” and so on, measure, discuss, put forward their own guess on the area of the parallelogram.