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This PDF contains 12 calendars (12 months). Each month contains activities about math. Things to do on familiar holidays (like July 4), less common holidays (like Backward Day), and any day.

free Ages 4 - 14 45 to 60 minutes
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In this activity, learners plan and create a 24-foot long, two-dimensional model of our solar system, and compare and contrast the differences between planets and the sun.

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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Many people think the different stages in the life of a star are actually different types of stars, rather than just stages in the life of a single star.

1 cent - $1 per group Ages 8 - adult 5 to 10 minutes
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This fun and simple hands-on astronomy activity lets learners make 3-dimensional models of the Earth and Moon.

$5 - $10 per group Ages 6 - adult 10 to 30 minutes
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In this activity, learners use candy pieces and a cookie to make an accurate model of the Sun they can eat. Parts of the delicious model include solar granules, sunspots, and solar prominences.

$1 - $5 per student Ages 6 - adult 10 to 30 minutes
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In this activity, learners make their own Sun tracker to explore how ancient civilizations around the world studied the Sun.

$1 - $5 per student Ages 6 - adult 10 to 30 minutes
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Learners will explore the concept of angular distance, and investigate why the moon appears to be the same size as the sun during a solar eclipse, despite the sun being much larger.

1 cent - $1 per group Ages 6 - adult 5 to 10 minutes