The app I learned about is Peardeck. Peardeck can be used instead of PowerPoint to create a more dynamic and student-based way of learning. Peardeck pairs with the google suite so it would be supported best in a Chromebook classroom. It is student-paced and there are multiple opportunities to check student understandings through inserted questions. The only downside is that it is google based so if a school does not use the Google Suite and they use the Office 365 suite instead. Peardeck is mostly free and but there are features that can be purchased additionally.

