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  • Tides Mobile

    Book Chapter | September 2011

    The Sun, Moon, and Earth are three extremely large objects separated by great distances. Despite the large distances between them, each object affects the others. Earth is kept in orbit around the Sun by the…

  • Tides of Change

    Book Chapter | December 2016

    In this lesson, students will explore the relationship between the ocean tides and the cycles of the Moon. Disciplinary core ideas covered are the roles of water in Earth’s surface processes and Earth materials and…

  • The Tides: A Balance of Forces

    Book Chapter | September 2011

    The interaction between the gravitational forces of Earth, the Moon, and the Sun causes tides. The rhythmic movement of the water associated with the tides causes successive high and low waters in the coastal areas.…

  • Red Tide

    Journal Article | August 2019

    Harmful algal blooms and global climate change

  • A Rising Tide

    Journal Article | September 2015

    Students explore the effects of thermal expansion on sea levels—both globally and close to home.

  • Science 101: What Causes the Tides?

    Journal Article | January 2012

    This column provides background science information for elementary teachers. In this month’s issue the author discusses the reason tides occur.

  • Science 101: What causes tides?

    Journal Article | July 2004

    Tides exhibit predictable cycles on daily, monthly, and yearly scales. The magnitude of the tides is dependent on the position of the Earth and Moon in relation to the Sun, but is also influenced by other factors. This…

  • Troubling Tides: Will Sea Turtles Survive the Rising Seas?

    Journal Article | November 2015

    Explore how climate change and rising tides are putting sea turtle hatchlings at risk.

  • Tides

    Collection | January 2015

  • Tides

    Collection | October 2017

  • Tips for Busy Parents

    Page | April 2020

    Tips for Busy Parents Do you panic when your child comes home from school asking for help with his or her science fair project? Do you ever wonder how you can help your child learn science? You are not alone. Many parents—especially those who didn't pursue careers in science—may be apprehensive, sometimes even fearful,…

  • Patterns - seasons, tides, shadows, and moon phases

    Collection | January 2017

  • How Can We Better Move From Data to Meaning?

    Journal Article | January 2021

  • Thinking Big

    Journal Article | March 2020

  • Connecting Learning Through Citizen Science in the Classroom, Community, and Online

    Journal Article | June 2020

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