Life cycle

  • PDF Preview of FACTivity for Amphibious Assault
    The question you will answer in this FACTivity is: How are human life and frog life similar, and how are…

    FACTivity – Amphibious Assault

  • Natural Inquirer Readers for students in grades K-2 focus on a scientist and their research. In this Reader, students meet…

    Meet Dr. Flitcroft – Vol. 1 No. 7

  • Natural Inquirer Readers for students in grades K-2 focus on a scientist and their research. In this Reader, students meet…

    Meet Dr. Flitcroft – Spanish

  • Pdf preview of the Meet Dr. Flitcroft article in spanish
    Natural Inquirer Readers for students in grades K-2 focus on a scientist and their research. In this Reader, students meet…

    Meet Dr. Flitcroft! – Spanish

  • PDF preview of Meet Dr. Flitcroft featuring Dr. Flitcroft standing in front of a body of water wearing waders
    Natural Inquirer Readers for students in grades K-2 focus on a scientist and their research. In this Reader, students meet…

    Meet Dr. Flitcroft!

  • 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,…

    Timed Travel: Measuring the Relationship Between Stream Temperatures and the Development of Salmon

  • Mountain pine beetles are important to the Western United States. They have a very special life cycle, that includes staying…

    Beetles Are Supercool! Climate Change Monograph Series – Vol. 1 No. 2

  • A black and white drawing of river shrimp
    Tropical streams provide many benefits to people and animals. For river shrimp that spend part of their life in the…

    Swimming Upstream Without a Ladder: Dams and Pipes and River Shrimp Movements

  • Swimming Upstream Without a Ladder - Word Search
    Test you knowledge on ecosystems, population, and migration.

    Word Search – Swimming Upstream Without a Ladder

  • Article cover for Swimming Upstream without a Ladder Spanish version
    Tropical streams provide many benefits to people and animals. For river shrimp that spend part of their life in the…

    Swimming Upstream Without a Ladder: Dams and Pipes and River Shrimp Movements (Spanish)