During a large lecture class of 125+ students, we used a polling and live quiz tool called Socrative (www.socrative.com) to engage students in the lecture and test their knowledge on the topics covered.
During the portion of the lecture on creating search strategies for different types of information, we asked the following question:
Is there a way that we could effectively and efficiently search the opinions of the Unified Judicial System of Pennsylvania?
Socrative allowed us, and the class, to see the students' anonymous answers and discuss them.
See the [question slide][1] for more details.
[1]: https://osf.io/mkdet/