Grade 2
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# 2-D Shapes

Strand: Shape and Space (3-D Objects and 2-D Shapes)
Outcomes: 6, 8

## Step 1: Identify Outcomes to Address

### Guiding Questions

• What do I want my students to learn?
• What can my students currently understand and do?
• What do I want my students to understand and be able to do, based on the Big Ideas and specific outcomes in the program of studies?
Strand: Number

Grade 1

Grade 2

Grade 3

 Specific Outcomes 2. Sort 3-D objects and 2-D shapes, using one attribute, and explain the sorting rule. 3. Replicate composite 2-D shapes and 3-D objects.

 Specific Outcomes 6. Sort 2-D shapes and 3-D objects, using two attributes, and explain the sorting rule. 8. Describe, compare and construct 2-D shapes, including: triangles squares rectangles circles.

 Specific Outcomes 7. Sort regular and irregular polygons, including: triangles quadrilaterals pentagons hexagons octagons according to the number of sides.

### Big Ideas

• Shapes can be distinguished based on geometric properties such as whether the figure is open or closed, the number of sides, the type of lines used (straight or curved, perpendicular or parallel), size or number of angles, symmetry, congruency and size.
• Shapes can be seen from various perspectives. The shape does not change when the orientation does.
• Shapes are named based upon various attributes or characteristics. These characteristics belong to all shapes with that name.
• Some shapes can belong to more than one category of shapes.