Yolanda U. Trapp
A special thanks to my professor Dr. John Wargo for providing steady encouragement and assistance all the way through the Unit.
To Mr. Bill White for his technical support.
To my colleagues Pedro Mendia-Landa and Mary Stewart who encouraged me to write the Unit.
To Ronaldo Ramirez who inspires me from the distance, and finally to the Yale Teacher's Institute for encouraging our Development as individuals.
Y.U.T.