Make a Signal Horn

Build a signal horn to make low frequency sounds that can be heard from far away.

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Inspiration Video

Suggested Materials

  • tubes (cardboard or PVC of different sizes and shapes)
  • balloons
  • rubber bands
  • straws
  • scissors

Difficulty Level

1
2
3

This design challenge requires simple motor skills, understanding of straightforward concepts, or common materials to build.

This is the difficulty level for a typical 4th grade classroom. Modify as needed for other age groups.