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In this sunny day experiment, learners measure and compare how quickly light and dark colored materials absorb heat.

This activity (on page 3 of the PDF under GPS: Sailboat Design Activity) is a full inquiry investigation into design optimization.

In this activity, learners construct hand-held altitude trackers. The device is a sighting tube with a marked water level that permits measurement of the inclination of the tube.

This activity (located on page 3 of the PDF under GPS: Glaciers Activity) is a full inquiry investigation about the different causes of glacial melt.

The goal of this activity is to design the fastest sailboat or one that carries the most treasure.

In this activity, learners make a barometer, an instrument to measure change in air pressure.