Write, Then Discuss
Many students are experts at trying to do as little as possible to get by. We've all been there. The teacher asks a question, we're mostly paying attention, so we say "I agree with what _____ said." As teachers, we can eliminate piggybacking by asking students to write their answers prior to discussing them. Writing prior to discussing also allows students to process their thoughts without distraction or input from others, which helps all students walk into a discussion prepared to participate.