The results of our last experiment were all over the place. It seemed like stringing paper clips from each magnet did not give us consistent results, so third graders redesigned their experiments to gather more conclusive data. They used a ruler to measure the distance a paper clip jumped to attract to each magnet. What did third graders find? That the farther a paper clip could jump would mean the magnet's strength would be greater! Check out their claims, evidence, and reasoning for this magnetic strength investigation!
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Unique fact! Some rocks have magnetic properties.