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What's the Problem?

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What's the Problem? explores inventions that have solved different problems over the years. Readers learn what problems inventions like the printing press, glasses, clothes dryer, can opener, zipper, and umbrella were created to solve.
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Product # 29876-G
Author Karen Lewit Dunn
Grade Level K-3
Interest Level 1-2
Fiction/Nonfiction Nonfiction
Lexile Level 570
Publisher Perfection Learning
Series Reading Essentials in Science