Unit 6, Lesson 4

Solid Shapes

Grade 2

Warm-up

What do you notice? What do you wonder?

A shaded shape composed of 6 squares. — C

Activity 1

Make a poster that describes your solid shape. Show your thinking, using drawings, numbers, or words. Help other groups name your shape.

Activity 2

Your teacher will give you a set of cards that show designs made up of different shapes.

Sort the cards into categories of your choosing. Be ready to explain the meaning of your categories.
Match 1 of your cards to a solid shape.
Which shape designs can you fold to make cubes? Explain your reasoning.
Fold your 2 shape designs into cubes. Compare your cubes with your partner.

Student Section Summary

We named and drew shapes, based on their numbers of sides and corners. We drew shapes with different side lengths.

A triangle is a shape with 3 sides and 3 corners
A quadrilateral is a shape with 4 sides and 4 corners.
A pentagon is a shape with 5 straight sides and 5 corners.
A hexagon is a shape with 6 straight sides and 6 corners.

Group of triangles varying in size, 3 shaded and 3 unshaded.

8 assorted shapes, 2 shaded and 6 unshaded.

We described solid shapes, based on the number and shape of their faces. A face is a flat side of a solid shape. For example, a cube is a solid shape with 6 square faces that are the same size.

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