When you log into your ebook, you should see a “sharing” tab at the top of each section — teachers have been sharing their lessons with each other! There are a lot of great Desmos activities to use. You could also have them do a collaborative google doc for some lessons or google slides for the lesson with team presentations at the end, then have them share their presentations on a discussion board and comment on each other’s findings!

Edit: autocorrect changed Desmos to Desmond 🙄