
Another good glossary of economic terms and concepts can be found on the Biz Ed website. Also on the Biz Ed website teachers will find virtual tours and simulations. You can read my original review of Biz Ed here.
In addition to the Biz Ed website, another resource I rely on for teaching economics is the Buck Institute for Education's problem based learning activities. The activities and lesson plans are available for free as PDF files or you can purchase a bound copy of the lessons with an accompanying video.