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This lesson familiarizes learners with the term "tropical belt." First, learners locate the equator, Tropic of Cancer and Tropic of Capricorn on a map and trace these lines with a crayon.

$1 - $5 per group Ages 4 - 11 45 to 60 minutes
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In this activity, learners make an equatorial sundial, which is simple to construct and teaches fundamental astronomical concepts. Learners use the provided template and a straw to build the sundial.

1 cent - $1 per group Ages 11 - 18 2 to 4 hours
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In this activity (on page 12 of the PDF), learners make a sundial (shadow clock) appropriate for their geographic location in the northern hemisphere and use it to tell time.

$1 - $5 per group Ages 8 - 14 1 to 7 days
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In this demonstration, learners explore a variation of a Foucault pendulum, but upside down.

$1 - $5 per group Ages 11 - 18 10 to 30 minutes
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In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

free Ages 4 - adult 10 to 30 minutes
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In this activity, learners examine the culture and history of the tomb site.

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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This activity helps learners understand how the angle of the Sun affects temperatures around the globe.

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners use tsunami time travel maps to predict how long it will take a tsunami to reach the shore.

free Ages 14 - adult 1 to 2 hours
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In this activity, learners explore how the shapes, sizes, and distances of land masses appear differently on two different models of Earth: an icosahedron and a flat map.

1 cent - $1 per group Ages 11 - 18 30 to 45 minutes
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In this activity about cartography, learners work in teams to create two different map projections: a planar (or polar) and a cylindrical (or Mercator) projection.

1 cent - $1 per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners make a 3-D model of magnetic fields by inserting a small, strong magnet into a sphere.

$1 - $5 per student Ages 8 - 14 5 to 10 minutes
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In this activity, learners find Xi'an, the archaeological area in China where the Terra Cotta Army was discovered, on a map or globe and look more closely at the relationship of the warrior site to ot

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes