Quizalize is another game-like formative assessment. However, unlike a similar tool Kahoot, all the questions and answered are pushed to the student's screen; there is no need for a main screen or projector, although a "leaderboard" can be displayed. A teacher can create an "open time" where anyone with the class code can join in anytime, and their dashboard allows real time results. Data can be exported later. Quizalize also allows questions to be tagged with topics so you can see patterns of strengths and weaknesses. Read this blog entry for more detail.