| Speak Up! Communicating Confidently |
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| Special Effects |
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4.4 |
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| Special Forces Careers |
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| Speed Racers |
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| Speed Skating |
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6.1 |
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| Sport Bikes |
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6.7 |
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| Sports Champions |
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5.5 |
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| Sports Heroes of Ancient Greece |
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4.9 |
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| Sports Jokes, Riddles, and Games |
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| Sports Journalism |
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7.5 |
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| Sprints, Hurdles, and Other Track Events |
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6.6 |
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| Star Spotters: Telescopes and Observatories |
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6.2 |
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| Steeplechase |
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4.8 |
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| Stephen Hawking |
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| Steroids |
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8.6 |
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| Steve Nash |
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6.4 |
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| Stinky Skunks and Other Animal Adaptations |
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5.7 |
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| Stone Age Geometry: Lines |
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4.4 |
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| Stone Age Geometry: Spheres |
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4.5 |
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| Stone Age Geometry: Squares |
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4.1 |
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| Stone Age Geometry: Triangles |
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4.3 |
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| Stone Age Science: Buildings and Structures |
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5.2 |
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| Stone Age Science: Energy and Movement |
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5.2 |
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| Stone Age Science: Materials |
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5.1 |
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