In this ESL lesson plan for adults and teens, students watch a video and do a listening exercise on a TED-Ed animation about philosophical questions. It includes discussion questions, conversation, and other activities about philosophy, the universe, and life. Students learn some important vocabulary words, phrases, and expressions from the video. The grammar activity features the usage of 'yet' and 'already', as well as a part on question formation. There is a quiz and review with a bonus activity included.

TED Curator Chris Anderson shares his boyhood obsession with quirky questions that seem to have no answers. (Introducing the series "Questions no one knows the answers to")