I was introduced to live polling in my first year of university during Psychology 101. Sitting in a lecture hall with 300 people, I responded to questions the professor put to the class by answering on a small remote, which immediately registered my response along with everyone else’s on a screen at the front of the hall. Polling was a quick way to engage us, and it encouraged us to pay attention. It’s a two-way street, too: He often used…