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Science experiment to test the hardness of a range of materials?

Discussion in 'Primary' started by brfcsc, Jan 19, 2011.

  1. brfcsc

    brfcsc New commenter

    Title says it all really- any ideas anyone? My brain in not working tonight!
  2. What sort of materials? Fabrics? Rocks?
  3. inky

    inky Lead commenter

    I came across a wonderful test called something like 'Come and take a knock if you think you're hard enough.' It's on here somewhere.
  4. brfcsc

    brfcsc New commenter

    A range of materials really- wood, metal, sponge- anything I can get my hands on!
  5. brfcsc

    brfcsc New commenter

    That experiment sounds interesting- any idea what was involved?

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