Excerpts from the Foreword: This bulletin is concerned with improvement in the use of extension teaching methods. It is intended primarily as a reference manual for inservice extension workers, prospective extension workers and graduate students in extension education. The extension worker's job is presented as an educational undertaking. The essential steps in the adult learning and teaching process are outlined. Important factors which affect the adoption of improved farm and home practices are discussed. The various teaching methods are compared on the basis of relative effectiveness and extent of use. Each individual method is examined critically. Essential elements, principal advantages, and limitations are identified. "How-to-do-it" instructions are left to other publications listed in literature cited or in the selected bibliography.