A handbook for graduate teaching assistants at Colorado State University includes suggestions to improve teaching and information on teaching and learning resources. Faculty teaching responsibility is discussed, along with 10 factors related to effective teaching and learning, including enthusiasm, knowledge of subject, and organization and preparation. Suggestions are offered for planning teaching activities and formulating instructional objectives. Appended resource materials include four idea papers from Kansas State University: "Improving Lectures" (William E. Cashin); "Improving Discussions" (William E. Cashin and Philip C. McKnight); "Improving Multiple-Choice Tests" (Victoria L. Clegg and William E. Cashin); and "Improving Essay Tests" (William E. Cashin). Also appended are articles and resource materials: "Laboratory Teaching" (Stephen Thompson); "Evaluating and Improving Your Teaching" (adapted from a chapter by John Boehrer in Harvard University's teaching handbook); "Your Role as Counselor/Referral Advisor"; a Colorado State University statement on sexual harassment; information on additional teaching and learning resources at Colorado State University; an annotated bibliography on college teaching; and Colorado State University's Student Course Evaluation rating form. (SW)