"Teaching Information Literacy Threshold Concepts: Lesson Plans for Librarians" is a collection designed by instruction librarians to promote critical thinking and engaged learning. It provides teaching librarians detailed, ready-to-use, and easily adaptable lesson ideas to help students understand and be transformed by information literacy threshold concepts. The lessons in this book, created by teaching librarians across the country, are categorized according to the six information literacy frames identified in the ACRL Framework for Information Literacy in Higher Education (2015). This volume offers concrete and specific ways of teaching the threshold concepts that are central to the ACRL Framework and is suitable for all types of academic libraries, high school libraries, as well as a pedagogical tool for library and information schools.