Twenty-four model units are presented to help elementary and secondary students learn about the functions and procedures of the criminal justice system and an individual's rights and responsibilities under the law. The first major section contains eight elementary level units and a bibliography of textbooks and articles upon which some of the units' activities are based. Content includes lawmaking, the roles of police, juvenile law, court procedures, and planning laws for the future. Within each unit are numerous activities with clearly identified objectives. Most of the activities involve students in creative writing, role playing, discussion of personal opinions, and interaction with community lawmakers and law enforcement personnel. The second major section contains 16 secondary-level units and a bibliography with content covering the Constitution and Bill of Rights, individual freedom, consumer law, crime, torts, courts, and the penal system and parole procedures. Each unit contains activities related to specific objectives. For example, in the unit about crime, one activity is designed specifically to help students understand that there are many alternative solutions to the crime problem. Students role play characters including prison directors, police officers, judges, Senate Committee members, citizens favoring victim compensation, and educators. Each group prepares a position statement suggesting social and economic reforms in the area of crime, and then the groups debate. (AV)