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Monthly learning letters + sensory kits that turn science into hands-on, screen-free learning your kids actually love.

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  • The Science Of Rainbows | The Curious Explorers Club | Physical Mail Edition

    The Science Of Rainbows | The Curious Explorers Club | Physical Mail Edition

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    The Science Of Rainbows | The Curious Explorers Club | Physical Mail Edition

    Regular price $12.99 USD
    Regular price Sale price $12.99 USD
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  • Amazing Bodies Letter | The Curious Explorers Club | Physical Mail Edition

    Amazing Bodies Letter | The Curious Explorers Club | Physical Mail Edition

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    Amazing Bodies Letter | The Curious Explorers Club | Physical Mail Edition

    Regular price $12.99 USD
    Regular price Sale price $12.99 USD
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  • Five Senses Letter | The Curious Explorers Club | Physical Mail Edition

    Five Senses Letter | The Curious Explorers Club | Physical Mail Edition

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    Five Senses Letter | The Curious Explorers Club | Physical Mail Edition

    Regular price $12.99 USD
    Regular price Sale price $12.99 USD
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  • Amazing Habitats Letter | The Curious Explorers Club | Physical Mail Edition

    Amazing Habitats Letter | The Curious Explorers Club | Physical Mail Edition

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    Amazing Habitats Letter | The Curious Explorers Club | Physical Mail Edition

    Regular price $12.99 USD
    Regular price Sale price $12.99 USD
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  • Incredible Landforms Letter | The Curious Explorers Club | Physical Mail Edition

    Incredible Landforms Letter | The Curious Explorers Club | Physical Mail Edition

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    Incredible Landforms Letter | The Curious Explorers Club | Physical Mail Edition

    Regular price $12.99 USD
    Regular price Sale price $12.99 USD
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  • Human Body Letter | The Curious Explorers Club | Physical Mail Edition

    Human Body Letter | The Curious Explorers Club | Physical Mail Edition

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    Human Body Letter | The Curious Explorers Club | Physical Mail Edition

    Regular price $12.99 USD
    Regular price Sale price $12.99 USD
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  • Ocean Depths Letter | The Curious Explorers Club | Physical Mail Edition

    Ocean Depths Letter | The Curious Explorers Club | Physical Mail Edition

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    Ocean Depths Letter | The Curious Explorers Club | Physical Mail Edition

    Regular price $12.99 USD
    Regular price Sale price $12.99 USD
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  • Simple Machines Letter | The Curious Explorers Club | Physical Mail Edition

    Simple Machines Letter | The Curious Explorers Club | Physical Mail Edition

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    Simple Machines Letter | The Curious Explorers Club | Physical Mail Edition

    Regular price $12.99 USD
    Regular price Sale price $12.99 USD
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  • Insect Life Cycles Letter | The Curious Explorers Club | Physical Mail Edition

    Insect Life Cycles Letter | The Curious Explorers Club | Physical Mail Edition

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    Insect Life Cycles Letter | The Curious Explorers Club | Physical Mail Edition

    Regular price $12.99 USD
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  • Wonders of Space Letter | The Curious Explorers Club | Physical Mail Edition

    Wonders of Space Letter | The Curious Explorers Club | Physical Mail Edition

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    Wonders of Space Letter | The Curious Explorers Club | Physical Mail Edition

    Regular price $12.99 USD
    Regular price Sale price $12.99 USD
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  • Weather Wonders Letter | The Curious Explorers Club | Physical Mail Edition

    Weather Wonders Letter | The Curious Explorers Club | Physical Mail Edition

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    Weather Wonders Letter | The Curious Explorers Club | Physical Mail Edition

    Regular price $12.99 USD
    Regular price Sale price $12.99 USD
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  • Hibernation Letter | The Curious Explorers Club | Physical Mail Edition

    Hibernation Letter | The Curious Explorers Club | Physical Mail Edition

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    Hibernation Letter | The Curious Explorers Club | Physical Mail Edition

    Regular price $12.99 USD
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