This document discusses essential questions, which are open-ended questions that go to the core of an issue and can be debated for a long time without definitive answers. Essential questions engage critical thinking skills rather than just recalling facts. The document provides examples of essential questions and compares them to more straightforward questions. It also outlines traits of essential questions and discusses how to incorporate them into learning at home and school to promote deeper understanding. The concept of essential questions was developed by education theorists in the late 1980s to enhance student understanding.