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Many people store food in refrigerators and clean clothes in washing machines. But long ago, these tools didn't exist. Big blocks of ice kept food cold. And people scrubbed clothes on long, bumpy boards. What other household tools have changed over time? Read this book to find out! Learn how daily life has changed over time in the Comparing Past and Present series-part of the Lightning Bolt Books ™ collection.
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Many people use cell phones and e-mail to communicate with others. But long ago, these tools didn't exist. All phone calls traveled through wires. And people used machines called typewriters to write letters. What other communication tools have changed over time? Read this book to find out! Learn how daily life has changed over time in the Comparing Past and Present series-part of the Lightning Bolt Books ™ collection.
Author
Description
Inventions change people's lives. But the stories told about how they were invented are often wrong. That story you heard of an overnight success took years of hard work and countless failed attempts to create. Discover the true stories behind inventions from the lifesaving gas mask to the thrilling Super Soaker.
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