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人教版五年级下册“图形的变换”是在学生初步感知了对称、平移和旋转现象,初步认识了轴对称图形,能在方格纸上画简单的轴对称图形及简单图形沿水平或垂直方向平移后的图形的基础上进行教学的。通过本单元的学习让学生进一步认识图形的轴对称,在方格纸上画出一个图形的轴对称图形和简单图形旋转90°后的图形,同时初步学会运用对称、平移和旋转在方格纸上设计图案,发展空间观念。
PEP fifth grade under the book “graphics transform ” is the initial perception of students in the symmetry, translation and rotation of the initial understanding of the axisymmetric graphics, graph paper can draw simple axisymmetric graphics and simple graphics along Horizontal or vertical translation of the graphics based on the teaching. Through the learning of this unit, students can further understand the axial symmetry of the figure, draw a graph axisymmetric graph on the graph paper, and the graph rotated by 90 ° after the simple graph. At the same time, it will learn to use symmetry, translation and rotation on graph paper On the design patterns, the development of space concept.