Hi My Cool Tool is called Socrative.
Socrative is a program that teachers can use to have online quizzes and interactive discussions. There is a quiz tagging feature to help students navigate the site better.The feature that I like is that there is question randomization and answer randomization. For me as an Art teacher I can put images/picture in the question area. Socrative has a team/group work feature that can make these quizzes competitive which for me in a all boys school is a great way to get my students engaged.
Once the quizzes are finished there is a report function that is very important because it gives the teacher immediate feedback about content that may or may not need to be reviewed.