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Kahoot! - Kahoot! makes it easy to create, play and share fun learning games in minutes—for any subject, in any language, on any device.
PhotoStudy - Stuck on a Math or Science Problem? Get Help From an Expert Tutor in Seconds!
Mentimeter - a web-based polling tool for workshops, conferences & events
Math.com - Math.
Sli.do - Slido is the ultimate Q&A and polling platform for live and virtual meetings and events. It offers interactive Q&A, live polls and insights about your audience.
Mathway - Mathway is a freemium math solving app that helps you find the solutions to any math problem you can imagine.