| South American Cloud Forest |
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3.4 |
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| Southeast |
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| Southwest |
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| So You Want to Be an Astronaut |
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| Speaking Out and Creating Change |
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| Speaking Up for Ourselves and Others |
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| Speak Out! Creating Podcasts and Other Audio Recordings |
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| Speak Up! |
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2.1 |
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| Speak Up! Giving an Oral Presentation |
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4.8 |
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| Spiders Weave Webs |
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4.4 |
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| Spinosaurus |
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3.2 |
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| Splash! (12 titles) |
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| Splash!: Ethelda Bleibtrey Makes Waves of Change |
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2.9 |
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| Sports-Graphics Jr. (6 titles) |
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| Sportsmanship |
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| Sportsmanship |
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3.0 |
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| Spotted Singers: Leopard Frog |
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0.9 |
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| Stadiums |
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3.1 |
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| Stan and His Bird Pal |
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| Stand Up for Caring |
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