In this excerpt, the author discusses the fundamentals of logarithmic functions. The focus is to demonstrate and illustrate logarithmic properties. Examples are given to reinforce the algebraic and geometric properties that are associated logarithmic functions. The practice problems for this module are removed. The material can be used to supplement classroom discussion. The time required to adequately address these problems varies based upon student involvement and comprehension level. Lesson times can range from 1-3 days.