This week I read the article “ Highly unlikely triangles and other impossible figures in bead weaving” by Gwen Fisher (2015).
The article captures the author’s journey to create a 3D sculpture of an impossible triangle. For those that don’t know, the impossible triangle was first drawn in 1934. It has since been incorporated into several different artists’ work, and inspired others to create similar optical illusions with other shapes such as squares, hexagons and tetrahedrons.
Fisher began by using seed beads and a quarter twist on each beam to construct a 3D version of the impossible triangle. However, the twist in the beads was found to curve the edges of the beams which destroyed the optical illusion. Therefore, the author decided to use the term “highly unlikely” as opposed to “impossible”. Here are three of the author’s highly unlikely triangles that were created.
Different coloured beads were used to distinguish the different edges of each beam. The following diagram shows how the author converted the 2D drawing into its beaded counterpart by cutting the beams into rows of little cubes. The author then used a beaded cubic right angle weave technique to create each cube.
After mastering the highly unlikely triangle, the author extended her skills and knowledge to create other highly unlikely shapes such as squares, hexagons, and tetrahedrons as seen below.
The tetrahedron ended up with a pleasant surprise in the form of three distinct paths that twist in a fashion similar to a Mobius strip. As you follow the path of one colour around the shape, you end up on the opposite face. Therefore you have to make two trips around the shape to return to the original position.
This is the final shape that was included in the article, and represents the most complex shape the author has tackled so far. The attention to detail that is required to complete such an amazing work of art is nothing short of amazing. Fisher continues to create impossible figures through beading and looks forward to being the first to try beading an impossible staircase.
STOP - As someone that has only ever tried to bead simple earrings or bracelets, I am in awe of the author/artist’s skill and creativity. I can’t even imagine how hard it would be to create these shapes from a provided pattern, let alone be the one to create the pattern. I think bringing some form of textile art into the classroom would be a really interesting way to showcase unique skills that students may have but rarely get to show in the classroom. Whether it’s beading, weaving, sewing, fashion design, screen printing, quilting, knitting or some other form of textile art, there is so much to explore mathematically. In one of our previous courses, we talked about students doing a project that showcases the math they use in their culture/home/job/community. I can see these textile arts being a great option for some students to use in that type of project.
Activity
I chose to try Coastal Salish weaving for my project this week. I assumed (wrongly) that it would be relatively easy. If high school students can do it, then obviously I should have no problem. Well was I ever wrong. The final product, seen below, took hours of work to complete and isn’t even finished because I ran out of purple yarn. I then created a line graph in Desmos that was similar in slope to the pattern in my project. The program ended up being the easiest part of this activity, and I can definitely see myself using it in my classroom when we explore linear functions.