Flipgrid is a great tool to connect with students and have students connect with each other. It allows for teachers to create video discussion boards for their class. Videos are created by teachers and students either in Flipgrid itself or from other video creation software and uploaded to the site. Flipgrid makes discussions for your class feel more personal with students posting videos of their responses instead of simply writing them.
Here is a tutorial on how to setup Flipgrid.
Here are some directions posted by Beth and Molly on how to use Flipgrid as well. Flipgrid Directions
