One of the better features added to Google Sites in 2019 is the image carousel option. Image carousels let you display a large collection of images in a gallery that site visitors can scroll through. As you'll see in the video that is embedded below, your image carousel can occupy as much or as little of page as you like.
Applications for Education
Image carousels are great for displaying a set of pictures from a school event like a holiday concert or a field trip. Image carousels can also be great for students to use on their own sites to share pictures to document the process of building something for a class project. Student can caption in the images to help explain the significance of each picture. Google Sites includes an option for easily captioning the images in the carousel. That caption option is demonstrated in the video above.