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This is an experiment about shadow lengths, geometry, and motion. Learners will use a flashlight and toothpick to create a shadow and will measure changes the length of the shadow as they change the position of the light. This is activity B-1 of... (View More)

This is an activity that uses numerical information to help dispel the prior conception that distance from the Sun causes the seasons on Earth. Learners will examine two images of the Sun, taken six months apart, measure the apparent diameter of the... (View More)

Audience: High school

This is a lesson plan for several related activities about the Sun. Learners will observe how a candle flame is like the Sun, brainstorm why the Sun is needed and how energy from the Sun is used, construct a Sun-Earth scale model illustrating both... (View More)

Students will first try to imagine what their school and neighborhood look like from “A Bird’s Eye View” and draw a detailed picture. They will follow this with a study of an aerial photo of their town. Materials required for this activity... (View More)

Keywords: Geography

Students will compare aerial photos of their area from the past with current photos, noting differences and then conducting ground truth investigations to determine what happened. Finally, students will use the information they gather about past... (View More)

Students will examine two satellite images of their local watershed taken at different points in time and use this data to learn about changes in the watershed, particularly in land cover. Next, they describe how these changes have had positive or... (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 time. Learners will construct a pocket sundial to determine the time of day by using the shadow of a string cast on the dial and will observe the changing position of the shadow as the Sun appears to move across the sky.... (View More)

Audience: Middle school

This is an activity about time. Learners will construct a pocket sundial to determine the time of day by using the shadow of a string cast on the dial and will observe the changing position of the shadow as the Sun appears to move across the sky.... (View More)

Audience: Middle school

This is an activity about the Sun's position in the sky as seen throughout the northern hemisphere. Learners will create a small device that models the changing position of the Sun for an observer anywhere in the northern hemisphere. This is... (View More)