This paper summarizes difficulties that chemistry students at all levels commonly exhibit when translating, manipulating, and interpreting mathematical expressions that contain logarithms, and offers approaches that the authors have found useful to help students overcome such difficulties. The online supplement provides problem sets created by the authors, based on student-instructor interactions that have taken place during many classes, help sessions, and laboratories. They range in level of difficulty from those appropriate for high school and first-year college students, to those appropriate for more advanced students. (Contains 1 table, 1 figure, and 4 notes.)