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My grandson is in 4th grade. His teacher assigned the class to make a container that will keep an ice cube frozen for several hours while inside. Do you have any ideas?

  • science -

    Well im in fifth grade and have never had to do anything like that..., but might i suggest a metal container of some sort but sealed tight with styrofoam interior and exterior?

  • science -

    Anonymous has the right idea.

    Insulation is the key. I'd try experimenting with a stryofoam box, packed with bubble wrap or sawdust or crumpled newspapers or ??

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