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VESPR Balloons


A group of six balloons are tied together to form an octahedron. The balloons are popped one at a time to form the bipyrimidal and the tetrahedral shapes.


  • Six 9-12 inch balloons of different colors
  • Push pin in a cork stopper


Blow up the balloons to mid size and tie them together to form an octahedral shape. Pop the balloons to get the various shapes.

Hint: Oddly, balloon phobias are common. You may want to warn your students that you’ll be popping the balloons. Also, the demo works better when the balloons are not over inflated.