The purpose of these documents is to provide educators in Saskatchewan with practical and relevant guides to teaching and learning as a means of expanding or refining teaching repertoires. The topic of this booklet is effective lecturing, described as a blend of three types of lectures: interactive (engaging student thinking throughout the lesson); mastery (linking new knowledge to familiar concepts and ideas); and traditional (presenting information with minimal student activity). Each lecture type is investigated individually by analyzing three case studies. Appendices provide additional information organizers and a lesson planning guide. (LL)