How Does It Work? (11 titles)
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How Does it Work?: Farm Tech Set (4 titles)
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How Is It Made? (6 titles)
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How to Build Our World Complete Set (8 titles)
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Ice Age Animals (6 titles)
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New! Fall 2024 |
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Incredible Animal Life Cycles (5 titles⁎)
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Incredible Sports Records (6 titles)
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Insane, Wacky World! (4 titles)
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New! Fall 2024 |
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In Search of the Unexplained Series (10 titles)
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In the News: Need to Know (6 titles)
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In the News: Need to Know Set Two (5 titles⁎)
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New! Spring 2025 |
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Intro to Chemistry: Need to Know (6 titles)
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Intro to Physics: Need to Know (6 titles)
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Invasive Species (14 titles)
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Inventions that Changed the World (10 titles)
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Investigating the Unexplained (10 titles)
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It's A Fact: Real Life Reads (15 titles⁎)
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N/A
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It's the End of the World! (8 titles)
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Jobs on the Edge (8 titles)
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New! Spring 2025 |
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Kick, Jump, Cheer! (6 titles)
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Las Fuerzas Armadas de los Estados Unidos (U.S. Armed Forces) (6 titles)
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Legendary Landforms (6 titles)
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Let's Look at Body Systems! (7 titles)
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Library of Awesome Animals Complete Set (34 titles)
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