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This lesson is an introduction to the use of a magnetic compass. At a specific location, learners will locate an object using a compass, identify its bearing, and others will attempt to locate the object by only knowing the bearing reading and the corresponding location where the bearing was obtained. Next, learners will develop a method for determining if a magnetic storm is occurring, and they will test this method using online information and a compass. This activity requires compasses and access to the Internet. This is Activity 5 in the Exploring Magnetism on Earth teachers guide.