Review findings as a class. Through brainstorming, develop the rule for determining if an object is magnetic. Direct participants to identify objects around the room to test. Ask them to predict, based on the rule, whether they are magnetic. Participants test objects and record observations.
Groups report out, comparing predictions with findings.
Modify the rule as necessary. Demonstrate the ability of the lodestone to attract. Ask for explanations. Discuss natural and manufactured magnets. Participants predict what will happen with sand.