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What is the best insulator: air, styrofoam, foil or cotton?

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Student teams investigate the properties of insulators in their attempts to keep cups of water from freezing, and once frozen, to keep them from melting. read more

Give each team its supply of three different insulating materials: Styrofoam, aluminum foil and cotton balls. Air is the fourth insulating material. Have students place enough of each insulating material in each large plastic cup so that it covers the bottom of the cup. read more

Insulation is all about creating areas that are slow to change temperature. Air pockets are some of the best when pair with a material that is slow to change temperature itself. That being said Styrofoam is probably the best followed by cotton. read more

Lesson Plan is suitable for 3rd - 5th Grade. Students investigate the properties of insulators by attempting to keep a cup of water from freezing, and once it is frozen, to keep it from melting. read more

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