Grade 5

Read the Headline Story to the students. Encourage students to use a model to find creative ways to answer the question.

A three-dimensional figure has 6 rectangular faces. Two edges are 1 inch long, two are 2 inches long, and one is 3 inches long. What can you figure out without measuring anything else?

- All together, there are twelve edges: four are 1 in. long, four are 2 in. long, and four are 3 in. long.
- Two faces are 1 in. × 2 in., two are 1 in. × 3 in., and two are 2 in. × 3 in.

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