| Space Words |
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| Stop That Racecar! |
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3.6 |
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| The Case of the Locked Library |
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| The Case of the Lost Robot |
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| The Case of the Missing Noodles |
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| The Four Seasons |
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3.0 |
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| The Life Cycle of a Rabbit |
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2.9 |
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| The Right Material for the Job |
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| Transformation of Electrical Energy |
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| Veo la luz (I See Light) |
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| Water, Water Everywhere |
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| Weather Words |
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| We Read About Forms of Energy |
NEW
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| What Is a Shark? |
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| What Makes It Move? |
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| Where Does Lightning Come From? |
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| Why Can't Penguins Fly? |
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| Why Does a Mirror Show Things Backwards? |
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| Why Doesn't the Moon Fall Out of the Sky? |
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| Why Don't Eyeballs Fall Out? |
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| Why Do We Need Air? |
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3.1 |
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| Why Do We Need Rocks and Minerals? |
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3.5 |
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| Why Do We Need Soil? |
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3.5 |
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| Why Do We Need Water? |
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2.8 |
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Canada
USA
