Thirty-Five for Debriefing

Choose this exercise

Purpose: Rapidly evaluate, score, and rank participant-generated lessons learned without personal bias or lengthy debate.

Use it when: Use right after an experiential exercise, simulation, or major project phase when you need the whole group to surface and prioritize practical takeaways.

Skip it when: Skip when the group is smaller than ten people, when people cannot easily move around, or when participants need to resolve deep disagreements through dialogue rather than voting.

Group arrangement: Individual card writing, followed by roving pairs for five scoring rounds, ending in a whole-room countdown.

Timing: Source specifies 15 to 30 minutes; 20 minutes fits 10 to 40 participants comfortably.

Materials and tools

• One blank 3x5 or 4x6 index card per person
• One pen or pencil per person
• Chime, whistle, or bell for round signals
• Flipchart and marker to record top-scoring lessons

Before participants arrive

1. Clear an open standing and walking space so participants can mingle freely.
2. Place an index card and pen at every participant seat.

Say this to open

Think back to the exercise we just completed. On the blank side of your index card, write one concise, practical lesson you learned. Keep it to a single clear sentence. For example: 'Never pitch pricing before understanding the client problem.' Write clearly so anyone can read it.

How to run it

1. Write the lesson 3 minutes

   Participants write one clear takeaway on the blank face of their card. After two minutes, remind everyone to check legibility, admire the thought, and prepare to release ownership of that card to the room.

2. Trade and pair 2 minutes

   Direct everyone to stand, turn the card face down, and mill around the room. Participants continuously trade cards face-down without reading them. After 20 seconds, ring the chime. Everyone stops and pairs with the nearest person.

3. Score across five rounds 9 minutes

   In pairs, partners turn their two cards over, read both lessons silently, and agree on how to divide exactly 7 whole points between the two cards based on practical value (such as 4 and 3, 5 and 2, 6 and 1, or 7 and 0; no fractions, no negative numbers). Each person writes their card's score on the back of the card. Repeat this trading, stopping, and scoring process four more times, writing new scores directly underneath previous scores, until each card has five separate scores on the back.

4. Sum the scores 2 minutes

   Ask everyone to return to their seats with the card currently in their hand. Direct each person to add up the five numbers on the back. The maximum possible total is 35 points. Have everyone write the final sum boldly on the card.

5. Countdown and share 4 minutes

   Call out numbers counting down from 35 (for example: 35, 34, 33, 32...). When a participant holds a card with that total, they raise their hand, stand, and read the lesson aloud. Record the top 5 to 7 lessons on the flipchart. Stop once you reach about 25 points or capture the top tier.

Debrief questions

• Looking at the top-ranked lessons, what common theme stands out?
• Which high-scoring guideline could we put to work immediately?
• Did any lesson score lower simply because it was phrased too vaguely?

Finished output: A flipchart list of the group's highest-ranked practical lessons, evaluated anonymously and scored out of a maximum 35 points.

Remote

In a digital whiteboard tool, create anonymous cards in a pool. Run five breakout rounds of 90 seconds with pairs. In each breakout, the pair claims two cards from the pool, agrees on a 7-point split, types the round score into a designated table on each card, and returns them to the pool. Afterward, everyone sums the card they end up with and posts cards scoring 28 or higher into a shared 'Top Lessons' column.

Hybrid

Hybrid delivery is not recommended for this rapid physical card-trading mechanic because physical swapping does not easily mix with digital board movement. Run remote participants in a parallel online board using digital breakouts, or run the entire session digitally on a shared board where both in-room and remote participants interact using their personal laptops or mobile phones.

Access and participation choices

• Participants with limited mobility may sit at an accessible station; nearby roving participants step over to trade and score with them.
• Writing support: anyone may dictate their lesson to a partner or facilitator.
• Passing: any participant may choose to hold a blank card or pass during the countdown without reading aloud.

If the session gets stuck

An odd number of participants leaves one person without a partner during a scoring round.

Form one trio. The trio evaluates all three cards and divides 10 or 11 points among them, or the spare participant acts as an impartial judge who helps another pair decide their 7-point split.

Partners cannot agree on how to split the seven points within the time limit.

Instruct pairs that if they deadlock, they must default to a 4-and-3 split and move on.

A participant receives their own original card during a later round.

Instruct participants to keep a neutral poker face, evaluate the idea objectively against the partner's card, and proceed without revealing authorship.

Terms used here

• 7-point split: Dividing seven whole points between two items so the sum equals seven (for example 4 and 3, 5 and 2, 6 and 1, or 7 and 0).