Padlet is a free, online tool that allows users to create digital bulletin boards or walls where text, images, and videos can be posted. Multiple contributors can add content to a Padlet wall simultaneously, making it a collaborative tool. The document provides examples of how Padlet could be used in a language classroom, such as for teachers to communicate announcements or share resources with students, and for students to respond to writing prompts, collect images, or create multimedia presentations. It also includes tutorials on how to set up and customize Padlet walls.