Instructables
Picture of How to evolve a balloon animal
Play a word game to evolve a unique genetic code, then learn to twist the balloon animal that your genetic code describes. Over 200 kids at World Maker Faire NY 2012 participated in this hands-on activity that introduces the concepts of genotype/phenotype mapping and mutation.

Step 1: Supplies

a sheet of paper (ruled stickies are ideal)
a pencil
a #160 balloon (#160 balloons are nominally 1" diameter and 60" long when inflated)
a small-diameter pump suitable for inflating #160 balloons
Sources: Qualatex makes reliable #160 twisting balloons and a suitable pump (the #47512 pocket pump.) You can find them sold online.
 
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wilgubeast2 years ago
This is awesome. What a great way to demonstrate an abstract concept. With balloons no less!