| Amazing Art Forms (8 titles) |
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| Animal Behavior (6 titles) |
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| Animal Idioms (8 titles) |
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| Animal Survival (6 titles) |
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| Body Systems (8 titles) |
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| Chinese Mythology (8 titles) |
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| Citizen Science Projects (8 titles) |
New! Spring 2026 |
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| Cycles in Nature (6 titles) |
New! Spring 2026 |
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| Dinosaurs (6 titles) |
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| Dinosaurs Set 2 (6 titles) |
New! Fall 2025 |
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| Discover Biology (6 titles) |
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| Discovering the United States (52 titles) |
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| Drones (4 titles) |
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| Egyptian Mythology (8 titles) |
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| Engineered by Nature (8 titles) |
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| Engineering Answers (8 titles) |
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| Explore Biomes (8 titles) |
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| Explore Space! (6 titles) |
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| Exploring Nature (6 titles) |
New! Spring 2026 |
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| Greek Mythology (8 titles) |
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