Sharing exemplars asynchronously/online is was hard.  As much as technology is a tool I use to teach, it isn’t the end goal of learning. When it comes down to doing physics, I like pen and paper. But sharing this was awkward,  clunky, or a huge use of paper. Now I can draw (full color!) to my heart’s content, and using Evernote snap pictures with my phone. This creates a unique URL that I can then share with my students through Google classroom that they can access when they are ready to review their work.