Materials List: Sounds All Around

For the introductory demonstration, the teacher needs:

Each group needs:

For the entire class to share:

  • roll of paper towels
  • assorted raw materials from which teams can design their own ear trumpets, such as plastic soda bottles, disposable cups, cardboard tubes, tubing and plastic sheets, as described next
  • 6-8 plastic soda bottles with the bottoms cut off; get the 360 ml (12 oz) size
  • 6-8 each, cups made of Styrofoam, plastic and paper; get the 180-240 ml (6-8 oz) size
  • 6-8 cardboard tubes from paper towel or toilet paper rolls
  • 4-6 segments clear rubber tubing, 0.7 cm inner diameter, 50-80 cm length
  • 4-6 segments plastic tubing, 1.5 cm inner diameter, 10-15 cm length
  • 4-6 pliable plastic sheets, 15 cm x 12 cm, available at craft stores; alternatively, use blank overhead transparency sheets
  • (optional) 4 funnels of various sizes; plastic works best