Bell ringers are short activities or exercises that are typically done at the beginning of a class or meeting to engage participants and get them focused and ready for learning. They can be used in various subjects and grade levels and are often designed to review previous material, introduce new concepts, or activate prior knowledge. Bell ringers can take many forms, such as quick quizzes, discussion prompts, brain teasers, or writing prompts. The purpose of bell ringers is to set a positive and productive tone for the class or meeting and to help participants transition into the learning environment.