The one-shot lecture format used in most information literacy/library instruction sessions generates a conflict between the objectives of the subject faculty member requesting the session and the objectives of the librarian conducting it. Trying to satisfy both sets of objectives often makes the librarian feel pulled in too many directions. Sometimes something as simple as an effective handout can resolve, or at least ameliorate, the conflict.
Nuttall, Harry D., "Da Vinci’s Vitruvian Man and the Academic Instruction Librarian: Striving for Balance" (2017). Research, Publications & Creative Work. 15.