This Teacher Key includes the answers to the Review Questions, and to the Mid-Term and Final Exam. It also includes two classroom activities that work well in helping students grasp important economic concepts. Catherine Jaime did her undergraduate work at the Sloan School of Management at the Massachusetts Institute of Technology. She has additional economics training through the Foundation for Teaching Economics and the Foundation for Economic Education. Catherine has taught in grades K-twelve with a concentration in high school economics and government. She has authored a number of history books and several booklets dealing with government and/or economics. She firmly believes in the importance of the U.S. Constitution and the Free Market, and it shows in her writings.