Don Cohen

Don Cohen, is a collaborator of Jerry Glynn, who both taught unconventional mathematical skills to children in Urbana Champaign, IL. These children included Theodore Gray, the son of Category Theorist John Gray and co-founder of Mathematica.

Some relevant web links

1. The actual math program
2. What people are saying about the Math Program
3. On Thinking About and Doing Mathematics

Some PDFs

1. Changing Shapes with Matrices
2. A PDF on How to do Math
3. How Did you Start Teaching?