Before COVID, gallery walks were a common teaching strategy. They get students out of their seats and can promote collaboration and conversation. Distance learning has forced us to change the mechanics of a gallery walk. One way to facilitate a gallery walk, synchronously or asynchronously, in distance learning uses Google Photos.
One way to start could be to assign students a topic. Each student will upload an image of their topic to a shared album in Google Photos. On their uploaded image, they will add a comment with a description or explanation of the connection to a theme or essential question. From there, students will browse the images in the shared album asking clarifying questions in the comments. The student who posted the image is required to answer all clarifying questions.
For teachers to start a shared album, open an image in Google Photos, click the three dots in the top right corner and click Add to album. (You can also go to the Albums tab in Google Photos and click Create album.)