Storify defines its service as "the easiest way to find, collect, and share what people are saying all over the web." I suppose that is the correct definition, but it's so much more than that.
Storify uses a multitude of different social media resources to create stories. From Google images to Facebook posts and everything in between, Storify takes content from the web and helps you develop your own story about a certain topic.
Check out these articles to get an idea of how you could use Storify in your classroom -
4 Ways to Use Storify in the Classroom
Potential Uses for Teaching with Storify
How Storify can be a New Platform for Students