How to Make a Catapult out of a Cardboard Box

Written by linda shepard
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How to Make a Catapult out of a Cardboard Box
Recreate a wooden catapult with a cardboard box. (château de predjama image by Julien Leblay from Fotolia.com)

The familiar cardboard box can transport a youngster to ancient times when the box is transformed into a catapult worthy of the toughest Knight of the Round Table. This project teaches basic engineering techniques while providing imaginative playtime. It's a great rainy day activity, and can be incorporated into a knight-themed birthday party craft session. The catapulted marshmallows will do little damage to the party locale, and the extras provide a sweet party treat.

Skill level:
Easy

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Things you need

  • Cardboard box
  • Pencil
  • Rubber band
  • Awl
  • Plastic spoon
  • Masking tape
  • Scissors
  • Marshmallows

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Instructions

  1. 1

    Cut one piece of cardboard from the box to measure 1 foot square for the catapult base.

  2. 2

    Cut the other piece of cardboard to measure 4 inches by 1 foot for the lever. Fold the lever in half lengthwise.

  3. 3

    Poke a hole in the centre of each side of the lever with the awl. Poke a hole in the middle of the base.

  4. 4

    Cut the rubber band and make a knot in one end.

  5. 5

    Pull the rubber bank up through the base and both holes of the lever, with the knotted rubber band end on the bottom of the base.

  6. 6

    Tape one side of the lever to the base. Make a tight knot in the other end of the cut rubber band.

  7. 7

    Tape the spoon handle to the top of the folded lever, with the bowl of the spoon facing down and extending past the unfolded edge of the lever.

  8. 8

    Pull the spoon back, place the marshmallow in the bowl and catapult the marshmallow forward.

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