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【教学内容】人教版六年级上册第57、58页。【教学过程】一、联系经验,引发需求师:我们学过的平面图形有哪些?立体图形有哪些?生:长方形、正方形、平行四边形、三角形、梯形。生:长方体、正方体。师:(出示一张圆形纸片)你认为圆应该属于哪一类?生:圆属于平面图形。师:它与学过的平面图形有什么不同?生:圆的边是弯的,其他平面图形的边是直的。师:圆的边是弯的,所以它
【Teaching content】 PEP sixth grade on the first 57,58 pages. 【Teaching process】 First, the contact experience, trigger demand division: What are the plane graphics we have learned? What are three-dimensional graphics? Students: rectangular, square, parallelogram, triangle, trapezoid. Students: cuboids, cubes. Teacher: (Show a round of paper) Do you think the circle should belong to which category? Health: Circle belongs to the graphic. Teacher: What is the difference between it and the learned graphic? Health: the rounded edges are curved, the edges of the other graphic are straight. Teacher: The round edge is curved, so it