The Chronicle of Higher Education explains:
For the app to be fully utilized, all of the students and the professor would need either an iPad or a laptop loaded with the software as they sit in the classroom. Then the instructor could use the iPad app to present slides that would show up on every student’s screen and allow any student in the room to annotate the slides or ask a question. For instance, students could highlight points on a map using their iPads, and the group of responses would be visible—anonymously—to the entire class. Mr. Samson said the app freed him from the podium.The app tracks students classroom participation, something Samson says could be used to spot early warning signs in students who may be having difficulty with the material. 20 classes are using LectureTools at the University of Michigan, but it's also being used at Ohio State and Michigan State.