During a large lecture class of 150+ students, we used a polling and live quiz tool called DirectPoll (http://directpoll.com/) to engage students in the lecture and test their knowledge on the topics covered.
During the portion of the lecture on Advanced Database Searches, students were split into two teams, Team Google and Team WoS. Each would be using the designated search platform (Google or Web of Science) to find a specific scholarly article. See the [question slide][1] for more details.
[1]: https://osf.io/gn5k6/