I am a high school mathematics teacher at Spring Lake Park High School (SLP, MN) and over these 38 years have taught a variety of courses and filled numerous extracurricular roles. Currently I am teaching part-time (Computer programming in Java and PreCalculus.) Also, I am the Executive Director of the Minnesota State High School Math League.
I dabble recreationally in mathematics, trying to extend or create novel mathematical ideas. In 1995, I believe I was the first to propose a new coinage system, with the dime being an 18 cent piece. I have contributed a couple of sequences to the OEIS, notably the organization number of a permutation and nxn array.