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Did you know that some breakfast cereals are fortified with ferric phosphate, while others contain tiny pieces of reduced iron?

$1 - $5 per student Ages 8 - 14 10 to 30 minutes
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Learners investigate an iron-fortified cereal by stirring it with a strong magnet. They discover that metallic iron is present in some cereals.

$1 - $5 per student Ages 6 - 14 5 to 10 minutes
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In this activity about magnetism (page 17 of the pdf), learners experiment with magnets, exploring the concept of diamagnetic materials by seeing how a grape reacts to a magnetic field.

$1 - $5 per group Ages 6 - 11 10 to 30 minutes
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Do grapes, yes the grapes from the grocery store, move in the presence of a very strong magnet?

1 cent - $1 per student Ages 8 - 18 5 to 10 minutes
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In this physics activity, learners experiment with the attractive and repulsive power of magnets.

$5 - $10 per group Ages 4 - 11 30 to 45 minutes