We use Physlets extensively in our introductory courses at Davidson College, but we always start the semester with a short laboratory whose sole purpose is to introduce the Physlet user interface and ...We use Physlets extensively in our introductory courses at Davidson College, but we always start the semester with a short laboratory whose sole purpose is to introduce the Physlet user interface and to solve a Physlet problem in the way a physicist solves a problem; that is, to consider the problem conceptually, to decide what method is required and what data to collect, and finally to solve the problem.