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| Welcome, science students! Click a button below for links, activities, or topic reviews. |
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| Here are the Internet connections to all those interesting Science Magazines and World of Science features in your book! Just select a topic or keyword, and you're on your way to the best science sites on the Web! |
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| Hey Kids, Teachers, and Parents! Visit these great Internet sites from National Geographic. |
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| Read a summary of a topic from your textbook. Then take a quiz to see what you've learned. |
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