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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.

This fun and simple hands-on astronomy activity lets learners make 3-dimensional models of the Earth and Moon.

In this craft activity, learners create a string of cut-out moons and stars.

In this activity, learners make their own Sun tracker to explore how ancient civilizations around the world studied the Sun.

This is a lesson plan for an activity in which learners, playing the role of archeologists, use math concepts about number bases to decipher the Dresden Codex, an ancient Mayan document.