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Build four balloon-powered vehicles and learn what makes them move. Some people say, 'It's not...Added August 28, 2017 - This item has been added.
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Easy-to-follow instructions help kids discover how to make a giant bubble maker, a hovercraft, and...Added August 28, 2017 - This item has been added.
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Easy-to-follow instructions help kids discover how to make a drawbot, a robotic hand, and a...Added August 28, 2017 - This item has been added.
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Easy-to-follow instructions help kids discover how to make a spinning top, a mountain climber, and...Added August 28, 2017 - This item has been added.
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Easy-to-follow instructions help kids discover how to make an electric butterfly, an electric...Added August 28, 2017 - This item has been added.
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Have you ever wondered how aircraft are able to soar through the sky? Readers will learn how...Added August 28, 2017 - This item has been added.
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Master essential grammar
Boost your vocabulary
Improve your TOEFL score! *
Collins Vocabulary...Added July 19, 2017 - This item has been added.
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"The Book of Genesis for conservationists"—Dave Foreman
Roderick Nash's classic study of...Added July 19, 2017 - This item has been added.
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Ray Charles (1930-2004) led one of the most extraordinary lives of any popular musician. In...Added July 19, 2017 - This item has been added.
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From the New York Times bestselling author Kristin Hannah comes a powerful novel of love, loss,...Added July 19, 2017