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Curious about 3-D Printing

Who invented 3-D printing? Spark elementary-aged readers' curiosity with questions and answers about how 3-D printers create toys, tools, and more by building objects layer by layer. Readers will discover the basics of this modern invention, its many uses, and how it is changing the way we make things. "Did You Know" facts and infographics help visual learners grasp new ideas. A Stay Curious! feature encourages further questions and builds research skills.