Our guest is Joe Youcha of Building to Teach. Formerly the education director of the Alexandria Seaport Foundation, Youcha now spends his time running a train-the-trainers program for hands-on math instructors. "For 20 years, I've been using boat building as an educational tool," he tell us. "In Building to Teach, the idea is to tap into groups that use boat building as a teaching tool, as well as volunteers from industry. We're now funded by the Office of Naval Research. " Youcha is also the co-author of the Carpenters' Union math training materials, used by about 30,000 union apprentices each year.