A few simple shape tools in Google Drawings and Slides make it possible to easily create comics that blend photos and comic elements.
See the Tutorials page for an overview of the basics. Other videos are also there to show details such as making comics with the Google Slides mobile app and how to create videos and virtual books of your comics.
The Projects page has examples and resources for all the final products that students might create. Other possible applications are also listed there.
The comics are a natural fit for some fun classroom creativity games. See that page for ways examples and tips.
Be sure to install the iOS or Android Google Slides app on your mobile device to easily bring photos into your comics.