Tozzl is a digital easy-to-use pinboard that enable people to collaborate with others.
The many facets of Tozzl open it up to a bunch of possible classroom uses. You could use it simply as a backchannel tool in which students ask questions through the course of a lesson. You could have students use it as a project management tool when they're working in groups. Tozzl message boards also have the potential to be used for simply distributing digital handouts and videos to your students.
Brief introduction to Tozzle:
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