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In this activity, learners make a scale model of the Solar System and learn the real definition of "space." Learners use the online calculator to create an appropriate scale to use as a basis for thei

In this two-part activity, learners explore the Earth and Sun's positions in relation to the constellations of the ecliptic with a small model.

In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

In this activity, learners will first learn the basics of galaxy classification and grouping.

In this activity, learners will explore what a constellation is and make their own.

In this activity, learners sample a star field to estimate the number of stars in the universe.

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.

In this activity, learners will discover how our universe is continuously expanding.

In this activity, learners investigate convection by using food coloring and water of different temperatures.

This fun hands-on astronomy activity uses a variety of simple props to help learners understand why they see what they see in a telescope.

In this activity, learners will create their very own constellation.

In this activity, learners create a star show and discover how they can prevent light pollution. Using simple materials, learners first design constellation boxes.

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.