Physlet problems in this directory were contributed by Evelyn Patterson at the United States Air Force Academy. These problems are used for Just-In-Time-Teaching. That is, they are part and parcel of a teaching method that uses the web to provide more than just interactive curricular material. The first set of links provide direct access to the Physlet problems themselves. The second set of links are to the JiTT preflights that provide the context for these problems.