三维图形（11岁以上）
3-D shapes (age 11+)
利用三维图形（正方体、长方体、棱柱、圆柱、棱锥、圆锥和球）的面、曲面、棱和顶点的性质来解决问题，包括想象截面。
Use the properties of faces, surfaces, edges, and vertices of 3-D shapes (cubes, cuboids, prisms, cylinders, pyramids, cones, and spheres) to solve problems, including visualising cross-sections
学习证据 / Evidence
- 数出并描述一个三棱柱和一个底面为正方形的四棱锥的面、棱和顶点。
- 描述水平切割圆柱或垂直切割圆锥所产生的二维截面。
- 利用三维图形的性质判断给定的展开图能否折叠成指定的立体图形。
- Count and describe the faces, edges, and vertices of a triangular prism and a square-based pyramid
- Describe the 2-D cross-section produced by slicing a cylinder horizontally or a cone vertically
- Use properties of 3-D shapes to determine whether a given net will fold into a specified solid
评估问题 / Assessment
如果{{name}}把一个圆柱体从正中间横切，就像把一罐豆子切成两半，他们能描述出切面的形状吗？如果斜着切呢？
If {{name}} slices a cylinder straight across the middle like cutting a tin of beans in half, can they describe the shape of the cut surface? What about slicing at an angle?