## Peter Farrell

I learned math the same way everybody has for hundreds of years: blackboards, graph paper, no calculators allowed. The teachers would always mention something interesting, but would say, "You need a computer to do that."

In college I did a little programming in Basic and Fortran, and only returned to it again decades later when I found Seymour Papert's *Mindstorms *in a used bookstore in New Haven. My world was changed. Papert proved everything in math class worth doing was worth doing on a computer. And a computer, far from being a way to avoid learning math, was a way for people (even very young ones) to learn to interact with a virtual world.

After that, every math class I taught learned a little LOGO programming. One day a student asked if he could use Python, and once I tried this easy-to-understand language I was hooked.

In 2015 I wrote my first book, collecting together dozens of math-related