Ask students to categorize their thinking before sharing it. Every response appears on a board the whole class can see — revealing what the group knows, where it’s clustered, and what’s missing.
This technique is grounded in research on retrieval practice (Roediger & Karpicke, 2006): the act of actively recalling and articulating knowledge — even before instruction — produces dramatically stronger long-term retention than passive review.
How to use it:
- Share the participation link or QR code at a natural pause mid-lecture
- Students categorize and respond individually in 60 seconds — no account needed
- Project the board and use the distribution to guide discussion
Works for: any moment where you want students to commit to an answer before the group discussion begins — making the subsequent conversation richer and more grounded.