Are they using visuals to show what they have learned?
Canva is an easy-to-use, free online program that allows students to create engaging visuals and share them with the rest of the class.
Adobe Spark is another great graphic design program that kids can easily use.
Once they have created these visuals, they can include them in their individual Google Docs, create a website to show them off to others, post them to a twitter stream with a certain #, paste them into a class Google Slide presentation, include them in a class Padlet, or any other number of apps that you can think of! You can even have the class decide how they want to share them. Just make sure they can comment on each other's work, and you can see it.