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In this activity, learners investigate parallax, a method used to measure distances to stars and planets in the solar system.

In this activity, learners will decide together on a question about how far, long or high the group could reach together.

In this activity, learners use their hands as tools for indirect measurement.

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.