Making Maths

This model designed by  Thomas Hull  is quite a challenge to complete but well worth the effort. The units themselves are simple. ( Francis Ow's 60 degree Unit)  The puzzle comes from putting the bits together. I have used 10 squares of paper in 5 different colours.  I made my life more difficult by using squares made from A6 paper.  I would certainly recommend using larger paper as it was quite fiddly.  As the pieces were quite small I also glued the pieces together to make sure they don't pop apart. The instructions that I used are here  https://static.mathigon.org/origami/star.pdf  and here   http://origametry.net/fit.html  on Thomas Hull's Origami Mathematics page. Following the construction from images is tricky but I managed to work out the instructions from the two pages.  I found it useful to remember that each tetrahedron point comes through the base of another and vice-versa.  So for example on my model the point...

 Not modular origami as such, but a very effective and simple to make model. Lots of square bits of paper needed 6 for a flower then 12 flowers. Glue and paper clips also required! I have no idea who is responsible for designing it but there are instructions on how to make it here .

  Designed by Brian Beitel I have recently discovered Brian Beitel's website and videos on YouTube . This piece is called Balanced and uses 30 modules.  I've used squares of paper that are green on one side and white on the other.   It's nice to make and fits together well without glue. The instructions are here .

  David Mitchell's Columbus Cubes have been covered here in a previous post . In that I said about the possibility of using them to create a Kusadama/ball. So here it is. You will need 20 Columbus cubes, 11 with one corner inverted, 8 with two corners inverted and 1 with three corners inverted.  Instructions are here