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Public Key Encryption: Kid Krypto
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In this activity, learners conduct a simulation exercise related to public key encryption and try to intercept a message sent between two learners.

Kelsey: Clues of the Dig Site Map
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In this activity, learners explore dinosaur fossils and a dig site. Learners work in groups to analyze a dig site map and match bones to a skeletal drawing of Kelsey (a Triceratops).

Fragile Waters
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In this activity (on pages 18-29) learners explore the impact of the March 24, 1989 oil spill in Alaska caused by the Exxon Valdez tanker.

The Poor Cartographer: Graph Coloring
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In this activity, learners help a poor cartographer color in the countries on a map, making sure each country is colored a different color than any of its neighbors.

Treasure Hunters
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Learners use their opponent's clues and a compass rose to find the hidden treasure on a map. Learners use problem solving and coordinate grid skills as they hunt for treasure.

Create a Pasta Population Map
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Learners work as a group to create a map of their community. They use pasta to represent people, and glue the pasta on their maps to show areas of large population.

Particle Detection
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By tossing, collecting, and sorting beanbags, learners understand how the IBEX spacecraft uses its sensors to detect and map the locations of particle types in the interstellar boundary.

Using Different Models of Earth
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In this activity, learners explore how the shapes, sizes, and distances of land masses appear differently on two different models of Earth: an icosahedron and a flat map.

Drawing Conclusions
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In this weather forecasting activity, learners determine the location of cold and warm fronts on weather plot maps.

Tourist Town: Dominating Sets
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In this activity, learners use a fictitious map of "Tourist Town" and counters to problem solve how to place ice-cream vans on street intersections so that every other intersection is connected to one

Aerial Imagery
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This activity (on page 2 of the PDF under SciGirls Activity: Earthquakes) is a full inquiry investigation into aerial imagery.