The document summarizes information from three websites about essential questions. It restates the key points from each website, such as that essential questions develop foundational understandings, arise from people's attempts to learn about the world, and allow exploration of the connection between personal experience and objective dimensions of the world. The document also notes things learned, such as that essential questions are at the boundary of known and unknown. Overall, the summary emphasizes that essential questions motivate meaningful inquiry, provide motivation for research, and help make meaning of life events.