Wallwisher is a digital tool that allows for collaborative brainstorming and sharing of ideas. It can be used by teachers and students in several ways: to introduce essential questions at the start of a unit and have students add content reflections and links as a study guide; to post a closing question for students to respond to as an exit slip to open the next class discussion; and for group projects to allow brainstorming of ideas online. More instructional uses and lesson ideas can be found on the provided website.