Science with Hexaflexagons

This week we built hexaflexagons in class and added science content on each of the four sides. I thought since the water cycle has four main vocabulary terms, it would be creative to put one vocabulary word on each of the four sides. We also used this for the layers of the atmosphere. Hexaflexagons have four sides and can be constructed with only one piece of paper.

This activity builds enthusiasm for learning science and is a good hands-on activity– much like the great bag of science. See the video gallery for all the science videos here.

History of the hexaflexagon

I first learned about hexaflexagon from Martin Gardner when I was in college.  In his book, Mathematical Puzzles and Diversions, Gardner shows a few different ways to construct a flexagon and hexaflexagon. Even though Gardner wrote about the hexaflexagons, others are given credit for their discovery. A graduate student named Authur Stone, while at Princeton University, created the first flexagon by playing around with some paper in math class.

This is a fun activity to do when you have four of something. I also did this with another science class with the layers of the atmosphere.

Here is the video on how to construct your own hexaflexagon. I made this video with iMovie and did a voiceover to give directions on how to construct the hexaflexagon. I exported with mpeg-4 as a Quicktime movie and encoded to flash using iSkysoft Video Converter.

How to fold the hexaflexagon

Start with a piece of paper with the length twice as long as the width. From there, follow my video instructions to complete your own hexaflexagon. Students can add content before or after it’s done. We have made both small and very large hexaflexagons in class over the last few years. Using colored markers is easier that colored pencils as the markers don’t press in on the paper. Remember, the better you make the creases, the easier the hexaflexagon will turn. Watch the video for directions.