This document discusses essential questions and information literacy models. It defines essential questions as open-ended questions that have no right answer and promote deeper thinking about a topic. Supporting questions provide background to guide work on a unit, while unit questions frame specific inquiries to uncover an essential question. The document lists qualities of effective essential questions and provides examples. It also briefly describes several prominent information literacy models, including the Big6 approach. The goal is to help students learn to ask their own essential questions to guide research and ensure their work goes beyond simply summarizing facts.