A 3-D printer prints a small, orange vase. 3-D printers can print many different objects. They can use different materials. 3-D printers use build objects one thin layer at a time.
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If you had a 3-D printer in your house, what would you make?
Have you read another book about 3-D printing or other modern technology? What did you learn in that book?
How might 3-D printing change the world?
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