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 the alternate FACTivity for the Under Where? article
    The purpose of this FACTivity is to demonstrate how house plants use water and compare this process with an outdoor…
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    Alternate FACTivity – Under Where?

  • The scientists in this study developed a process to help managers identify management priorities. As conditions change over time, the…
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    At Your Service: Developing Models to Help Natural Resource Managers Make Better Decisions

  • PDF preview of the By the Light of the Silvery Minnow article.
    Many changes have occured in the Rio Grande since the 1940s that have created a river that is deeper and…
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    By the Light of the Silvery Minnow: Can Young Minnows Be Taught About Their Natural Foods?

  • Caribbean Cruise cover for the article. The main image is of a stream bed.
    Particulate organic matter (POM), which consists of small pieces of twigs, leaves, soil, and other items found in the water,…
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    Caribbean Cruise: Examining the Movement and Quality of Organic Matter Over Time From Two Caribbean Watersheds

  • PDF Preview of Crossword for Food for the Soil
    Test your knowledge on alluvial soil, watersheds, and fish.
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    Crossword – Food for the Soil

  • PDF preview of Freshwater crossword.
    Test your knowledge on contamination, floodplains, and watersheds.
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    Crossword – Freshwater

  • The cover of "Did They Make the Gradient?" featuring a black and white photo of a flume installed in a stream to measure streamflow.
    If the temperature of a stream rises too high, the animals that live in the stream may find it difficult…
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    Did They Make the Gradient? Climate and Stream Temperatures Now and Into the Future

  • Illustration of three students watering a plant
    In this study, the scientist was asked to predict how much fresh water people living in the United States will…
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    Do What You Water: The Current Situation and Possible Future of Fresh Water in the United States

  • Illustration of three students watering a plant
    In this study, the scientist was asked to predict how much fresh water people living in the United States will…
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    Do What You Water: The Current Situation and Possible Future of Fresh Water in the United States (Spanish)

  • Black and white illustration of three skiers in a snowy mountain. One skier stands up front holding a large thermometer while looking at their watch, while the other two skiers await anxiously behind.
    Slab avalanches are the most dangerous kind of avalanche. A slab is a layer of new snow sitting on top…
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    Excuse Me While I Flow My Snows: What Makes An Avalanche Happen?

  • Black and white illustration of three skiers in a snowy mountain. One skier stands up front holding a large thermometer while looking at their watch, while the other two skiers await anxiously behind.
    Slab avalanches are the most dangerous kind of avalanche. A slab is a layer of new snow sitting on top…
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    Excuse Me While I Flow My Snows: What Makes An Avalanche Happen? (Spanish)