Google slides

Slidesmania and Slides Carnival

Google Slides is a powerful teaching tool... not just slideshows anymore! Teachers can create various tools through slides to share with students: digital notebooks, portfolios, planners, and of course, slideshows to share content.

Slidesmania and Slides Carnival have a ton of free slideshow templates for teachers to use. When you click on one of their templates, you have the option to open it in Google Slides which makes a copy for you. Definitely worth checking out!