*the book*

*, The Turing Omnibus - 61 Excursions in Computer Science*, by A. K. Dewdney, Chapter 1, page 3, and in

**Computer Recreations**, A. K. Dewdney,

*Scientific American*, September 1986.

I teach a

*Fractals and Chaos*course for secondary math and science teachers as part of a graduate degree program. I assign*Wallpaper*as a programming exercise prior to assigning the*Mandelbrot set*algorithm as a programming exercise. An orderly method for exploring a section of the coordinate plane is needed in both.*is an interesting application of the circle formula and odd and even numbers.*

**Wallpaper**
Watch this short video to see

*Wallpaper*in action.
Go to this link to download the Scratch file for this project.

http://scratch.mit.edu/projects/popswilson/3143785

I also have a free PDF file that goes into more detail about the math and the Scratch coding. It is available free, on request, by sending an email to grandadscience@gmail.com.

Emails are never shared and are only used to transmit files.