How Is It Made? (6 titles)
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How It Works (10 titles)
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How to Build Our World (4 titles)
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How to Build Our World Complete Set (8 titles)
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How to Build Our World Set Two (4 titles)
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How to Help the Planet (4 titles)
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I Can Play Sports! Series (12 titles)
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If I Met an Ice Age Animal (12 titles)
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I Love Sports (18 titles⁎)
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Incredible Animal Life Cycles (5 titles⁎)
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In Search of the Unexplained Series (10 titles)
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Insects Up Close (20 titles)
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Insect World (15 titles⁎)
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Internet Issues (4 titles)
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In the Spotlight (14 titles)
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Invasive Species (14 titles)
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In Winter, Where Do They Go?
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It's a Disaster!
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Jordan Jones Sports (4 titles)
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New! Fall 2025 |
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Journey into Space (6 titles)
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Jungle Babies of the Amazon Rain Forest (1 title⁎)
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Kids Living Green (4 titles)
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Kid-Zilla (2 titles)
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New! Fall 2025 |
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Las Fuerzas Armadas de los Estados Unidos (U.S. Armed Forces) (6 titles)
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