Mathematics 2
SS2.4
Describe, compare, and construct 2-D shapes, including
- triangles
- squares
- rectangles
- circles.
[C, CN, R, V]
Indicators for this outcome
| (a) |
Identify examples of triangles, rectangles, squares, and circles as found in personal experiences. |
| (b) |
Compare the attributes of triangles, squares, rectangles, and circles and generalize descriptions of each category of 2-D shapes objects. |
| (c) |
Critique the statement "A 2-D shape can either be a rectangle or a square, but not both". |
| (d) |
Compare two 2-D shapes of the same type (e.g., both are circles) and explain how the dimensions of the shapes can be used to compare the shapes (one-to-one correspondence or non-standard units). |
| (e) |
Classify 2-D shapes arranged in different orientations according to the type (triangle, rectangle, square, or circle) and explain the impact of the orientation of shape on its classification. |
| (f) |
Create a model to represent a 2-D shape. |
| (g) |
Sort regular and irregular 2-D shapes according to two attributes and explain the sorting rule used. |
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