Life cycle

  • 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

  • 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

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

    Meet Dr. Flitcroft!

  • 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

  • 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

  • Test you knowledge on ecosystems, population, and migration.

    Word Search – Swimming Upstream Without a Ladder

  • 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)