4 14 faster, easier, better the world of inventions

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Ngày đăng: 26/04/2017, 15:54

Fascinating Facts • An inventor working on radar got the idea for the microwave oven after radio waves melted a chocolate bar in his pocket • The modern zipper, invented in 1912, was named for the sound it made when it was used to close rubber boots • Clarence Birdseye, who invented a way to freeze food for sale, got the idea from watching the Inuits in Canada Genre Nonfiction Comprehension Skill Summarize Text Features • Time Line • Captions Scott Foresman Social Studies ISBN 0-328-14851-2 ì
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