Egg Frame Challenge

Egg Frame Challenge

Posted 2013-07-18 by MonStafollow
Here is a fun learning exercise - a bit messy so better outside. It's a chance to teach the kids some basic engineering principles, and have a competition at the same time.

The aim is to build a frame around an egg to try and protect it when it is dropped from a set height. The height is raised with each successful drop until one egg is left.

Excellent fun for a boy's birthday party.

Time: 1 hour
Age: 5-10's, Over 10's
Level: Medium

  • Drinking Straws
  • Sticky Tape
  • Scissors
  • Eggs

  • Method
  • Take an egg and use straws and sticky tape to build a frame around it. There are many, many different ways to do this.
  • The egg may not stick to the tape if it is straight from the fridge. Try wrapping straws around it to stick to.

    She didnt make this herself

    The entrants

  • Draw marks on a stick or on the wall at regular intervals, starting at 30cm and going at 15 cm intervals.

  • Start at the lowest mark. Drop the egg-frame and see if the egg breaks. Do this for everyone's egg. For all eggs that passed, drop them from the next lowest mark. Continue until one egg is left.

  • This one got to 10

    It helps to have a dog handy

    Extensions to the activity:

  • Instead of doing frames, make landing pads for the eggs.

  • Try to build a tower that will hold the egg. The highest tower that doesn't drop the egg or topple over wins.

  • For a harder challenge, put two tables of equal height about two feet apart, and tell the kids they have to build a bridge that spans the gap, and that successfully holds an egg at the centre.

  • Engineering notes:

  • A triangle is the strongest geometric shape, because it can't fold on itself. See below how the square can be folded, but the triangle can't. Look at the 3 dimensional triangle - it is very strong, but the square triangle can fold.

  • A wide base will mean less likelihood of tipping.

  • Look at how the forces work on each design. Straw strength is excellent in tension (pulling), not as good in compression (pushing), and not great in bending.

  • Categories

    238015 - 2023-07-18 02:17:57


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