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Change in the Sand

In this engaging STEM challenge, students are tasked with designing a device to recover coins and keys that have fallen into the sand below while remaining on the boardwalk. With their materials, including cardboard tubes, magnets, and pails, teams must utilize their understanding of magnetism and mixture separation to create an effective retrieval solution while also adhering to environmental considerations by not disturbing the sand dunes. Collaborate, innovate, and demonstrate your engineering skills!

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Change in the Sand

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  1. Change in the Sand A Third Grade STEM Challenge

  2. Scenario: You are at the beach and drop your bag just as you are going across the boardwalk. All of your coins and keys spill down into the sand below.

  3. Challenge Now you must design and build something to retrieve your stuff without getting off the boardwalk. (You don't want to disturb the sand dunes!)

  4. Requirements Stay on the boardwalk (which is 10 feet above the sand.) Retrieve change and keys without retrieving sand along with it. Demonstrate understanding of magnets and separating mixtures in your discussion, project log, and design. Work as a team!

  5. Materials: Cardboard tubes String Masking tape Magnets Pails Sieves Netting Paper Sand Coins Keys Ladder

  6. Assessment:

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