“图形与变换”是人教版小学数学五年级下册第一单元的内容,从教学的实际效果来看,“旋转”是学生最难掌握的内容。“旋转”这一内容要求学生能在方格纸上把一个简单的图形按顺时针或逆时针方向旋转90度。尽管学生已经有一定认知基础,他们在二年级下册的学习中已经初步认识了生活中的旋转现象,会判断一种物体的运动方式是平移还是旋转。但是要求学生在方格纸上将简单图形进行正确的旋转,却给学生带来很大的困难,导致学 “Graphics and Transform ” is the content of the first unit of the fifth grade of the PEP in the PEP, from the actual effect of teaching, “spin ” is the most difficult to grasp the content of the students. “Rotation ” This content requires students to rotate a simple graph 90 degrees clockwise or counterclockwise on graph paper. Although students already have a certain cognitive foundation, they have first learned the spin of life in the study of the second grade, and will judge whether an object moves in a translational or rotational manner. However, asking students to rotate the simple graphics on the squared paper correctly brings great difficulties to the students,