In this ESL lesson plan for adults and teens, students watch a TED animated video about tips for thinking critically. It includes discussion questions and conversation activities about critical thinking and decision making. Students learn some important vocabulary terms and phrases from the video. The post-viewing section includes activities on a metaphor from the video, vocabulary context usage, and rewriting sentences. The grammar activity features the usage of the conjunction whether in indirect speech. There are additional speaking tasks included, as well as a quiz and review section with a bonus activity.