Green Machines (6 titles)
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Green World, Clean World (1 title⁎)
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Gross-out Defenses (6 titles)
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Happy Holidays! (6 titles)
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Haunted History Complete Set (11 titles)
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Haunted History Set One (5 titles)
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Haunted History Set Two (6 titles)
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Health Helpers (4 titles)
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Health: Need to Know (6 titles)
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New! Fall 2025 |
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Healthy Habits (6 titles)
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Heroic Dogs (8 titles)
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Hideous History (4 titles)
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HorrorScapes (1 title⁎)
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Hound Town Chronicles (8 titles)
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How Awesome Can You Be? (6 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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Insane, Wacky World! (4 titles)
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Internet Issues (4 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 (6 titles⁎)
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Intro to Chemistry: Need to Know (6 titles)
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