What do natice americans do in their free time?

Beads, beads, beads!!! These guys use their looms to make interesting designs of using only beads made of shells. It's fourfold symmetry! They use math. There were a couple images thrown in there as well. You have your classic wompum belt of the late 18th century. You have your lovely Inuit girl in her voluminous parka. There was a very enlightening piucture of a loom. And never forget the picture of the Cartesian Coordinate system. Reflection symmetry is Like us. If you stick a mirror in the middle of say a human. I wouldn't actually do that because that's gross, but say you did. One half would reflect almost perfectly onto the other. And that is reflective symmetry. Quaternary is the base-4 numeral system. It uses the digits 0, 1, 2 and 3 to represent any real number. Now, four fold symmetry for number three is used in graphing. In number four it is used for clothing sizes. The beadwork originated in 1794.