Sorting and Describing Shapes and Objects

Strand: Shape and Space (3-D Objects and 2-D Shapes)
Outcomes: 6 and 7

Step 1: Identify Outcomes to Address

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: Shape and Space (3-D Objects and 2-D Shapes)

Grade 2

Grade 3

Grade 4

Specific Outcomes
6.	Sort 2-D shapes and 3-D objects, using two attributes, and explain the sorting rule.
7.	Describe, compare and construct 3-D objects, including: cubes spheres cones cylinders pyramids.
8.	Describe, compare and construct 2-D shapes, including: triangles squares rectangles circles.
9.	Identify 2-D shapes as parts of 3-D objects in the environment.

Specific Outcomes

Describe 3-D objects according to the shape of the faces and the number of edges and vertices.

Sort regular and irregular polygons, including:

according to the number of sides.

Specific Outcomes
4.	Describe and construct right rectangular and right triangular prisms.

3-D objects and 2-D shapes can be analyzed according to their attributes.
3-D objects and 2-D shapes with similar attributes can be grouped together into classes of shapes.
3-D objects can be analyzed, grouped and defined based on the number and shape of faces and the number of edges and vertices.
There are relationships between the number and shape of the faces of a 3-D object, and the number of its edges and vertices.
By thinking about the particular attributes of a class of 2-D shapes and the relationships between those attributes, students begin to generalize about shapes, assign shapes to particular classes and construct definitions of classes of shapes.
There are mathematical conventions that govern how 2-D shapes are classified and named. One important attribute by which 2-D shapes are classified is the number of sides.