Headline Story
Three-Dimensional Geometry, #3
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Introduction
Read the Headline Story to the students. Encourage students to use a model to find creative ways to answer the question.
Headline Story
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?
Possible student responses
- 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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