Game: synchronous
Challenge: asynchronous (see "self paced challenges")
To create a Kahoot: https://kahoot.com/schools-u/
Student link: http://kahoot.it
About Kahoot!
Getting started
Resources and programs
Frequently asked questions
Create and share
Accounts
Creating kahoots
Sharing kahoots
Play and discover
Live games
*Self-paced challenges
The Discover page