The document discusses Kahoot, an online formative assessment tool. It explains that Kahoot allows teachers to create quizzes at getkahoot.com for free after making an account. Students can join the Kahoot quiz on their devices by entering a code and their names. As the quiz is played, students select answers on their devices and see feedback and their position on a leaderboard. At the end, teachers can view detailed feedback on student performance. A new "Ghost Kahoot" feature allows students to replay a quiz and compete against their previous performance.