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This is an activity about the Earth's revolution as it relates to the zodiac. Learners will role-play, acting as the revolving Earth and Sun, while others will hold signs of the 12 zodiac constellation names to form a circle around the Earth-Sun... (View More)

This is an activity about how we measure the brightness of stars in the night sky. Learners will use interpolation to determine brightness, then observe the brightness of Delta Cephei over the course of two weeks, and plot their observations as a... (View More)

This is an activity about using large numbers in astronomy. Learners will first estimate how long it would take to count to a billion, if it was a full-time job. Then, they will judge their estimates using a calculator to get a more definitive... (View More)

This is an activity about the shape of the Earth’s orbit. Learners will first use elements of the orbit of Earth and Pluto and an apparatus using string, a pencil, and pushpins to accurately draw an ellipse, showing the nearly circular shape of... (View More)

This is an activity about the size and scale of the Sun-Earth system. Learners will take an imaginary trip to the Sun by comparing images of the Sun and Earth at different points in altitude above the Earth. This is to ultimately conceptualize the... (View More)

This activity is about astronomical themes. Learners will use a U.S. Atlas or the internet to search for names of cities or natural features named after astronomical objects. Their lists may be used to stimulate discussion or to begin creative... (View More)

This is a lesson about measuring star size. Learners will use eclipsing binary systems to measure star diameters. This is Activity G-8 of Universe at Your Fingertips 2.0: A Collection of Activities and Resources for Teaching Astronomy DVD-ROM, which... (View More)

This is a lesson about sorting and classification. In groups, learners will sort twenty images of galaxies into categories of their own devising. Then, the groups compare notes about their sorting criteria and learn more about what the different... (View More)

This interactive, online module allows learners to study the history of the discovery of black holes. Learners may work independently or in small groups to complete the activity. By completing this activity students learn the history of the... (View More)

This is a lesson about representative sampling. When given parts of the Hubble Deep Field image, learners will count the number of galaxies in one sample section of the image. Then, they will calculate how many galaxies there are in each whole image... (View More)