Welcome to our website’s resource library, where we offer an extensive collection of free science materials tailored for K-12 students. Dive into a wealth of educational resources including articles, activities, lesson plans, learning modules, and much more. All materials are free to download!

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  • The cover for the 'Tale of Two Caves' article. The main image is a photo of a person standing in a small passageway of a cave.
    Caves are important natural features in Sequoia and Kings Canyon National Parks in California. Past studies of some of these…
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    A Tale of Two Caves: How Is Hurricane Crawl Cave Different From Crystal Cave?

  • PDF preview of 'Tale of Two Caves' FACTivity.
    In this FACTivity, you will grow your own speleothem. At the end of this FACTivity, you answer the following question:…
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    FACTivity – A Tale of Two Caves

  • Black and white illustration of a giant watering a forest with a watering can.
    Until the early 1950s, people mined copper, gold, and silver in the Beartooth Mountains in Montana. During mining operations, the…
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    Let Nature Take Its Course: Helping the Environment Take Care of Itself

  • PDF preview of the Spanish version of "Let Nature Take Its Course"
    Until the early 1950s, people mined copper, gold, and silver in the Beartooth Mountains in Montana. During mining operations, the…
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    Let Nature Take Its Course: Helping the Environment Take Care of Itself (Spanish)

  • Cover for 'The Whole Kit and Kaboodle' article. The main image is a photo of an otter sitting on a rock.
    Kit’n’Kaboodle Cave was rediscovered in 1992 by a team from the USDA Forest Service. This cave and others in this…
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    The Whole Kit and Kaboodle: Exploring the Relationship Between Land Otters, Tlingit People, and Kit’n’Kaboodle Cave

  • The cover for the 'Tropic Topic' article. The main image is a photo of exposed limestone karst pavement.
    The scientists in this study wanted to compare the chemistry of soils and leaves in Puerto Rico’s northern wet and…
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    Tropic Topic: What Is Known About the Limestone Zone?

  • PDF preview of the word search for "Let Nature Take Its Course"
    After reading “Let Nature Take Its Course,” try to complete this word search using glossary terms from the article.
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    Word Search – Let Nature Take Its Course