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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  • PDF preview of the NSI pages featuring Ge Sun
    Meet Dr. Ge Sun – a hydrologist who asks questions about the impact of plants on the water cycle and…
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    NSI: Hydrologist Page

  • The cover of the Sediment-al Journey article. The main image is a photo of people enjoying water sports in Baltimore Harbor.
    Chemicals from auto emissions, industrial processes, and urban development are found in most urban areas. Two of the chemicals found…
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    Sediment-al Journey: Measuring Metal Concentrations in Soil Beside Urban Waterways

  • PDF preview of the Time Warp Spotlight from "Full Throttle Model"
    Nonpoint source pollution is pollution coming from widely developed areas, such as farms or cities. However, nonpoint source pollution can…
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    Spotlight – Time Warp: Full Throttle Model

  • PDF preview of the Experimental Forest and Range Spotlight on Coweeta Experimental Forest
    Learn more about the Coweeta Experimental Forest in western North Carolina. Coweeta Experimental Forest is part of the Forest Service’s…
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    Spotlight on Experimental Forests and Ranges: Coweeta Experimental Forest

  • Cover for the Timed Travel article. The main image is a photograph of the Yakima River.
    Water temperature helps regulate aquatic ecosystems, and, for many aquatic organisms, life-cycle phases are tied to water temperature. Salmon eggs,…
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    Timed Travel: Measuring the Relationship Between Stream Temperatures and the Development of Salmon

  • Cover for the 'Under Where?' article. The main image is a photograph of a rocky waterfall.
    When snow melts or rain falls, some of the water runs off into streams or rivers. Most of the water,…
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    Under Where? Underground Water and Its Contribution to Streams

  • Cover for the 'What's the Nonpoint?' article. The main image is a photo, taken in 2012, shows point source pollution of the Altamaha River in Georgia.
    Nonpoint source water pollution comes from large areas or landscapes such as roadways, farms, and urban and suburban communities. Scientists…
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    What’s the Nonpoint? Assessing Nonpoint Source Water Quality Threats Nationwide

  • Cover of the Freshwater NI journal. The main image is a photo of a freshwater lake.
    In the Natural Inquirer Freshwater edition, you will learn many new things about Earth’s freshwater. As you read each article,…
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    Freshwater – Vol. 18 No. 1

  • The cover of the Natural Inquirer journal for 'Scientific Models and Adaptive Management'. The image is a collage that includes a cluster of trees and a golden eagle.
    The Scientific Models in Adaptive Management Natural Inquirer examines a variety of different research topics including how hiking activities affect…
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    Scientific Models in Adaptive Management – Vol. 17 No. 1

  • Front cover of National Inquirer Climate Change edition with images of scientists, a wolverine, and a field
    Is the Earth’s environment changing over time? In the past few years, most scientists have agreed on at least one…
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    Natural Inquirer – Vol. 14 No. 1

  • Cover of the Nature Science Investigator
    NSI: Nature Science Investigator (NSI) is a self-guided activity book for children ages 8-14. The booklet enables each student to…
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    NSI: Nature Science Investigator

  • Front cover of the "Full Throttle Model" monograph featuring a central image of two people in waders taking samples in a stream and a background photo of a manufacturing plant on a riverbank.
    Scientists can use models to simulate and predict the effects of an action. In this research in the Great Lakes…
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    Full Throttle Model (Time Warp Monograph Series) – Vol. 1 No. 16