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Find out how inventions such as the lightbulb and the automobile have changed the way we live by reading Then and Now.
Price$6.25
Find out about simple machines and how we use them every day.
Look and Learn—that’s what scientists do when they use microscopes and other tools that make small things look bigger or faraway things look closer.
Learn about the history of flying machines, from hot air balloons to jets, in To Fly in the Sky.
Learn how people use computers for work, study, and fun in this beginning look at technology.
Find out how oranges start out on trees and end up on breakfast tables in Oranges: From Fruit to Juice.