- Stand in a tight circle and have each person reach into the middle with his or her left hand and grab someone else's left hand. If you have an odd person out, she should hold someone else's right hand with her left.
- Then have everyone reach into the middle of the circle with his or her right hand and grab the right hand of a different person (i.e. not the person whose right hand they're holding).
- Now, without letting go of hands, try to untangle the knot to the simplest form you can manage. You might have to climb over or under other people in the knot to get untangled. See what happens!
A third common type of knot is the trefoil knot. Tie an overhand knot in a piece of yarn and then tie the two ends of the yarn together. Pull out the loops of the knot and lay it out until it looks like this:
Now, try your human knot game again, but this time see if you can figure out what to do at the start to purposefully get one of these three types of knots in the end.
If you want to see a video with more knot theory games, check out Vi Hart's video about doodling in math class.