3-2-1 Knock-Knock: CFU and Feedback Protocol

3-2-1 Knock-Knock Routine

  • Use the 3−2−13-2-1 knock-knock sequence: say 3−2−13-2-1, then say "Who's there?" to elicit responses.
  • After a response is shared, repeat the question and then select a 22-nd or non-volunteer to answer next; do not call the volunteer's name first to avoid bias.
  • If no one responds initially, use the fallback: "That's OK. Can you listen to some other answers and I'll come back to you?"
  • If needed, call on two other students to gather responses and then return to the original student.

Turn-Taking and Selecting a Non-Volunteer

  • Always choose a non-volunteer first to encourage broader participation.
  • After two non-responses or non-participation, cycle back to the original student after others have spoken.

Handling Responses and Feedback

  • When a response is given, assess its accuracy:
    • If partially correct: echo/repeat it back, or say it in a similar way; you may also say "fantastic".
    • If partially correct: elaborate on why it is correct or provide a brief explanation.
    • If not correct: briefly explain the error.

Encouraging an Error Culture and Next Steps

  • Promote a culture that learning includes errors:
    • If not quite right: say, "Not quite right. Let's hear another response."
    • Repeat the question to the student who didn’t answer and invite them to respond.
    • Offer a second path: allow them to choose from multiple options based on peers' responses.

CFU Threshold and Reteach Trigger

  • Monitor for consecutive incorrect responses:
    • If you receive 22 incorrect responses in a row, stop the CFU (checking for understanding) and reteach.