The purpose of this booklet is to help teachers prepare students to live and work harmoniously in a society where diversity is the norm. Following background information on the development of the booklet, strategies are described for increasing harmony and learning in the classroom, such as creating diverse collaborative learning groups to bind members to a common goal. Next, a discussion is provided of the stages involved in creating a more inclusive curriculum and a glossary of terms related to race, gender, and class is presented. Common myths related to social class are then presented, along with statistical data to help dispel the myths, and 1985 data are presented on wage gaps between men and women and between whites and minorities. Finally, eight suggested classroom activities and exercises designed to sensitize students to the effects of gender, race, and social class roles are briefly described. Appendixes provide a description of four first-day classroom exercises to encourage student interaction; a bibliography of 73 books, 75 newspaper and magazine articles, 11 films, and 21 videotapes dealing with race issues; and a bibliography of 44 books, 21 articles, and 40 films and videos related to gender issues. Contains 26 references. (AJL)