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Earth structure  
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Middle school  
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In this activity, students explore how maps and models are used to represent the landscape. Students will recreate their school grounds in a sandbox, clay, or a cardboard model. They will then photograph or videotape their model from above and from... (View More)

Students will use remotely sensed images and topographic maps to classify land cover types in their watershed. A field trip to specific sites will allow the students to ground truth cover types found on the remotely sensed images and extrapolate... (View More)

Keywords: Ground truth

This is an activity about gravity. Learners will fill out a questionnaire to assess their ideas about how the Earth is shaped and how things fall at different places around the planet. Then, in small groups, learners will discuss how gravity works... (View More)

This is an activity about shape. Learners will investigate that the Earth is a sphere by comparing the length of shadows from nails arranged on a flat map compared to nails arranged around a spherical globe. From the observations collected, they... (View More)

This is an activity about shape. Learners will investigate that the Earth is a sphere by comparing the length of shadows from nails arranged on a flat map compared to nails arranged around a spherical globe. From the observations collected, they... (View More)

This field activity introduces students to the concept of a system. Students identify the components, inputs and outputs of the local system at a range of biometry study sites, as well as the boundaries of their investigations at these sites in... (View More)

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