"PowToon is a free web app that lets you create presentations and animated videos. PowToon Edu is a free Chrome app extension that does the same on Chromebooks and Chrome browsers. There is also an education page.
It's easy to use and there are some great resources on the site to help you learn how to use it. It can be used by teachers to make their presentations more engaging, and by students to create presentations for their projects."
Via John Evans