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【教学内容】冀教版四年级下册第38~40页。【教学过程】一、创设情境,导入新知。师:同学们,老师给你们带来一些好看的图片,你能从这些图片中找出哪些平面图形?(预设:这些四边形都是平行四边形)师:这些图形真的是平行四边形吗?它为什么叫平行四边形呢?揭示课题:今天这节课,我们就来全面了解平行四边形。【设计意图:抓住学生的认知基础展开教学,从数学的角度来全面地认识平行四边形。】
Teaching content】 【Ji Piao fourth grade Volume 38 ~ 40 pages. [Teaching process] First, create situations, import new knowledge. Teacher: Students, teachers bring you some nice pictures, which graphic can you figure out from these pictures? (Default: these are all parallelograms) Teacher: Are these graphics really parallelograms? Why parallelogram? Reveal the subject: Today’s lesson, we have to fully understand the parallelogram. [Design intent: to seize the students’ cognitive foundation to start teaching, from a mathematical point of view to fully understand the parallelogram. 】