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This is an activity about the apparent motions of Venus as seen from Earth. Learners will make a 3-D model using themselves, a light source, and a small white ball to visually understand Venus's orbital cycle and why it can sometimes can be seen in... (View More)

This is an activity about observing. Learners will look for particular stars, their colors and brightnesses, as well as important constellations in the nighttime sky. They also will compare the relative brightness of the sky near towns to gauge the... (View More)

This activity is about symbols used by various cultures to interpret the Sun. Learners will do three separate activities to illustrate how astronomy was important to both ancient and present day cultures. First, they will learn about Sun symbols... (View More)

Learners will identify existing government agencies charged with safeguarding water quality, their geographic jurisdiction, and their subjects of concern, such as water quality laws, information, testing, and enforcement, and identify water quality... (View More)

Audience: Middle school, High school
Materials Cost: Free per student

This is an activity about size and scale. Learners will identify and label their location on a series of maps, at successively larger scales, starting with their classroom location outward to the Milky Way galaxy. This is Activity H-1 of Universe at... (View More)

In this investigation students explore how resolution affects information content on remotely sensed images, relate remote sensor resolution (pixel size) to information content, and gain an understanding of the information content of different kinds... (View More)

This is an activity about size and scale. Learners will identify and label their location on a series of maps, at successively larger scales, starting with their classroom location outward to the Milky Way galaxy. This is Actividad 8.1 as part of El... (View More)

This is an activity about scale. Learners will use toilet paper squares as a standard measuring unit for a Solar System model and will determine the scaled distance between each planet using the data provided. This is Actividad 4.2 as part of El... (View More)

This is an activity about observing. Learners will look for particular stars, their colors and brightnesses, as well as important constellations in the nighttime sky. They also will compare the relative brightness of the sky near towns to gauge the... (View More)

This is an activity about telling time. Learners will construct a northern-hemisphere star clock and will set their star clocks based on the position of the Big Dipper in the sky. Then, they will use their star clocks to predict where the Big Dipper... (View More)