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Beach Chair Reflection: The End of the School Year Should Be Bittersweet

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    geological layers of sedimentary rock, exposed along the highway, Salt River Canyon, Arizona

    Geologic Age Dating Explained

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    Symbols

    Symbols

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    Yellowstone's Hot Springs

    Extremophiles: The Most Extreme Life Forms on Earth

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    Water Buoyancy

    Water Buoyancy, Cohesion & Adhesion

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    Games and Activities on the American Revolution

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    Games and Activities on Ancient Egypt

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    Games and Activities on Ancient Greece

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    Debating Through Time

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    Erosion! The Ever-changing Earth

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    Citizen Science across the Curriculum—Celebrate Urban Birds

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    Parachutes, Gravity and Air Resistance

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    Games and Activities on the Constitution

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    Write Like an Egyptian

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    Powerful Partnerships: Exploring Flowers and Their Pollinators

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    The Kid Who Drew Too Much