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Counting With Quadrants
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Millions of organisms can live in and around a body of water.
Why Does the Moon Have Phases?
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In this activity, learners use a simple 3D model to discover why the Moon has phases.
Earth Walk
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In this hands-on and feet-on excursion, learners take a science walk to visualize the planet's immense size and numerous structures, without the usual scale and ratio dimensions found in most textbook
To Topo Two
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In this activity, two groups of learners create two separate landform models out of clay (mountains and valleys).
Mass of the Earth
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In this activity, learners use basic measurements of the Earth and pieces of rock and iron to estimate the mass of the Earth.
Sizing Up the Universe
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In this online interactive challenge, learners choose items to represent the Earth or solar system, then determine other items to represent the Moon, or Milky Way based on their relative size.
Eclipse: How can the little Moon hide the giant Sun?
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In this activity, learners explore how distance can affect the way we perceive the size of an object.