Raptor World (6 titles)
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Ready, Set, Game! (6 titles)
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Record-Breaking Animals (6 titles)
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Regions of the United States (6 titles)
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Regions of the United States (5 titles)
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New! Spring 2025 |
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Reptile World (17 titles)
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Rescued! Animal Escapes (6 titles)
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Rescuing Animals from Disasters
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Responsible Citizenship (6 titles)
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River Adventures (6 titles)
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River Monsters (6 titles)
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Robot World (4 titles)
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Rockin' Earth! (6 titles)
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Rocks and Minerals (6 titles)
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Rocks & Fossils (4 titles)
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Soon! Spring 2026 |
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Saddle Up! (10 titles)
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Save Our Earth! Climate Action Explained (6 titles)
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New! Fall 2025 |
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Saving Animals from the Brink (6 titles)
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Saving the World (4 titles)
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Scary Places (9 titles⁎)
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Scary States (of Mind) Complete Set (20 titles)
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Scary States (of Mind) Set One (10 titles)
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Scary States (of Mind) Set Two (10 titles)
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Science Behind the Colors (12 titles)
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