Walkie Talkie


  • Two aluminum cans with rough edges sanded down or covered with masking tape
  • Nail (and hammer)
  • Five feet of Wire or nylon string


  1. Adult hammers hole into the bottom center of each can, with nail.  Remove nail.
  2. Child laces string or wire through each hole.
  3. Adult ties knot at each end of wire or string.
  4. Child and adult (or two children) hold cans far apart until wire or string is taught.
  5. One person talks into one end and other person listens at the other.
  6. Discuss what you have discovered.  How did sound get from one can to the other?  Sound travels along a wire or string.


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