The third in this series presents the 24 creases forming the triangle grid in the circle. The level of complexity of reforming a single circle is increased without increasing the difficulty of folding. The modules reformed when joined make highly complex systems without increasing the complexity of folding. Any of the three EFC series can be done independently without having done the others first, they are the same folding process in different directions.
You can see more about this project on my blog or purchase the book online.