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!

  • Grade Level

  • Type

  • Topic

  • Duration

  • Reset
  • The Caves and Karst edition of Natural Inquirer examines research on a variety of topics including white-nose syndrome in bats,…
    Bookmark
    Please login to bookmark Close

    Caves and Karst Natural Inquirer – Vol. 20 No. 1

  • Test your knowledge on contamination, floodplains, and watersheds.
    Bookmark
    Please login to bookmark Close

    Crossword – Freshwater

  • After reading the Freshwater edition of Natural Inquirer, test your knowledge of the issue with this eyeChallenge. Explain what each…
    Bookmark
    Please login to bookmark Close

    eyeChallenge – Freshwater

  • The question you will answer in this FACTivity is, “How might fish and other aquatic life be affected by turbidity?”…
    Bookmark
    Please login to bookmark Close

    FACTivity – Full Throttle Model

  • When vegetation near streams and rivers is disturbed or removed, it can no longer hold the soil in place. When…
    Bookmark
    Please login to bookmark Close

    FACTivity – Go With the Flow!

  • When vegetation near streams and rivers is disturbed or removed, it can no longer hold the soil in place. When…
    Bookmark
    Please login to bookmark Close

    FACTivity – Go With the Flow! (Spanish)

  • The question you will answer in this FACTivity is: What is the relationship between the level of chemicals in a…
    Bookmark
    Please login to bookmark Close

    FACTivity – Sediment-al Journey

  • Watch a 43-minute video taped live at Grand Lake, Colorado, featuring questions from students and answers by Carl Chambers, a…
    Bookmark
    Please login to bookmark Close

    Fresh Water LIVE from Colorado

  • Follow water on a journey through a watershed, from forest to faucet, in the Eastern United States. This is a…
    Bookmark
    Please login to bookmark Close

    Fresh Water LIVE from Eastern U.S.

  • In the Natural Inquirer Freshwater edition, you will learn many new things about Earth’s freshwater. As you read each article,…
    Bookmark
    Please login to bookmark Close

    Freshwater – Vol. 18 No. 1

  • In the past, scientists had estimated how much rainfall is intercepted by trees growing in rural areas. The scientists in this study…
    Bookmark
    Please login to bookmark Close

    Good to the Last Drip: How Trees Help to Reduce Pollution

  • With two-thirds of the U.S. population drinking water from surface sources such as streams, rivers, lakes, and reservoirs, it is…
    Bookmark
    Please login to bookmark Close

    Green Means Clean! Assessing the Condition of U.S. Drinking Water Watersheds