I’ve been involved with math circles since 2004, when I attended the First National Meeting on Math Circles and Competitions, held at the Mathematical Sciences Research Institute in Berkeley, California. That meeting gave rise to the National Association of Math Circles, with which I became involved in 2012.

In 2012, I founded the Puerto Rico Math Circle, which became inactive after my departure from the island.

In 2016, Dr. Linda Green and I co-founded the Chapel Hill Math Circle at the University of North Carolina – Chapel Hill. I also founded the Triangle Math Teachers’ Circle at North Carolina State University. Those programs are thriving after my departure from the Tar Heel State.

### Videos

These videos and pictures come from the Chapel Hill Math Circle site.

**Spring 2016**

- The following are links to recorded sessions of the Beginners’ Group, edited and produced by Dr. Ruthie Lyle.
- These are some pictures (by Veronica Rosario) and a video (by Ruthie Lyle) of the Julia Robinson Math Festival (5/21/16).

**Problem-solving**

- The following problem-solving series was created at the North Carolina School of Science and Mathematics in the Spring Semester of 2016.
- The Three Step Problem-Solving Cycle