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【教学内容】苏教版四年级下册第75、76页和79页“你知道吗”。【教学过程】一、情境设疑,引入课题师:同学们,课前老师准备了一些生活中的图片,请仔细观察,这些图片里都含有我们非常熟悉的图形,看谁能先发现?(投影出示生活中利用三角形的图片)生:三角形。师:你们真有数学眼光,其实老师在拍这些照片的时候,拍着拍着心中就产生了疑问
Teaching content】 【Sujiao version of the fourth grade volumes 75,76 and 79 pages “Do you know?” 【Teaching Process】 I. Situational Problems: Introducing Problem Teachers: Students, Pre-class Teachers Prepare Some Pictures of Life, Please Observe Carefully. All of these images contain graphics that we are very familiar with. Who can find out first? ( Projection shows the use of triangles in life picture) Students: triangle. Teacher: You really have a mathematical perspective, in fact, when the teacher took these photos, patted my heart on the question