I know, it's part of GSuite, but this tool is so cool, it gets a page all of its own!
One of the coolest tools for an educator and their students. There are so many ways to use this tool that I am not going to go into great detail. However, there are already some very good curated resources available, and links to these can be found here.
This is a tool that really has made a difference in GSuite for Education. Now available to anyone with a Google account.
60 smarter ways to use Google Classroom from TeachThought