Clickers is a powerful tool for promoting interactivity and engagement to lectures, regardless the class size, grade level and subject content. They can be used in a multiplicity of ways, for example to check prior knowledge or recall, to provide course feedback, to promote conceptual understanding or to facilitate peer instruction. In this workshop, the speaker will share practical examples and experiences of using clickers for a variety of in-class activities in UM undergrad courses, and report student feedback about the use of this technology.