Research shows that when students work in groups co-using devices, collaborating and constructing knowledge together, children deepen their learning(e.g., Hirsh-Pasek et al., 2015; Guernsey,2012; Takeuchi & Stevens, 2011).
Flip (formerly Flipgrid) is a free app from Microsoft where educators create safe, online groups for students to express their ideas asynchronously in short video, text, and audio messages.