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这节课是九年义务教育青岛版五年级上册第5单元“信息窗1”的第二课时.教材是在学生已经掌握了面积概念和面积单位,长方形、正方形的面积计算以及认识平行四边形特征的基础上进行教学的,也是进一步学习三角形、梯形、组合图形的面积及六年级圆的面积与立体图形表面积的基础.可见这节课的内容在整个教材体系中起着承上启下的作用.
This course is the second class of the ninth year of compulsory education Qingdao edition fifth grade on the fifth unit “information window ” textbook is in the area of students have mastered the concept of area and area units, rectangular, square calculation and understanding of parallel Quadrilateral characteristics of the basis of teaching, but also to further learn the triangle, trapezoid, the size of the combination of graphics and sixth-grade circle area and the size of the surface area of the three-dimensional graphics shows that the contents of this lesson in the textbook system plays a role in the context.