1-2-4-All

1-2-4-All is a liberating structure developed by Henri Lipmanowicz and Keith McCandless. It encourages everyone to participate based on a clear question, alternating between individual reflection, pair exchange, group of four, and sharing in a large group. The format allows for a simple progression: each person thinks, confronts, enriches, and then contributes to a collective synthesis. It works with 4 to 200 participants, both in-person and remotely.

Walkthrough

1. 1

   Set the framework and intention

   1 min

   The facilitator announces that the exercise will last 12 minutes and that everyone will have a place in the reflection. They say: “We will work in 1-2-4-All: first alone, then in pairs, then in groups of four, and finally all together.” They clarify that the format is designed to prevent a few voices from dominating. Participants listen and prepare to quickly transition from one phase to another.

   Tip — Display or state the four phases immediately, with their exact durations: 1 minute alone, 2 minutes in pairs, 4 minutes in groups of four, 5 minutes in plenary. This reassures the group and limits questions during the exercise.

2. 2

   Pose the working question

   1 min

   The facilitator poses a single, clear, and open question directly related to the workshop topic. They read it slowly and then repeat it once: “The question is: ...” They check that everyone understands it, without opening the discussion yet. Participants note the question or keep it in view to stay focused during the first three phases.

   Tip — Avoid double or overly broad questions. If the question contains 'and', often rephrase it into a single request; otherwise, groups will diverge in directions that are difficult to compare in plenary.

3. 3

   1 — Silent reflection alone

   1 min

   The facilitator launches the first phase: “For 1 minute, each person reflects alone and in silence on the question. Write down your ideas, even if they are rough, without trying to justify them.” They start a visible or announced timer. Participants work individually, without exchange or comment. This silence ensures that everyone produces their own thoughts before being influenced by others.

   Tip — Hold the minute of silence genuinely, even if some seem ready before the end. More thoughtful individuals or those less comfortable speaking need this time to engage in the exercise.

4. 4

   2 — Sharing and enriching in pairs

   2 min

   The facilitator asks participants to pair up with their neighbour or in pre-prepared pairs. They say: “You have 2 minutes to share your ideas and enrich them. Look for what surprises you, what complements each other, or what deserves to be kept.” Each pair exchanges quickly, without seeking a perfect consensus yet. The goal is to circulate initial ideas and clarify them.

   Tip — Announce halfway through: “There is 1 minute left, make sure both people have spoken.” This simple prompt prevents a pair from becoming a mini-monologue.

5. 5

   4 — Convergences and differences in groups of four

   4 min

   The facilitator groups two pairs to form groups of four. They give the instruction: “You have 4 minutes to identify your convergences, differences, and one significant idea that you could share afterwards.” Participants compare their contributions and look for what holds the most value for the collective. They should not report everything but select what best illuminates the question.

   Tip — Emphasise 'one significant idea' rather than 'the best idea'. This nuance reduces the search for perfection and helps groups quickly choose something shareable.

6. 6

   All — Sharing in plenary

   5 min

   The facilitator brings everyone together and opens the collective sharing. They say: “Each group shares one significant idea, concisely. We aim to hear the diversity, not to redo the entire discussion.” Each group of four presents an idea, a convergence, or a significant difference. The facilitator listens, notes the key points, and avoids lengthy debates at this stage.

   Tip — If the group is very large, ask for short contributions that differ from what has already been said. A useful prompt is: “Who has a new idea or an important nuance to add?”

7. 7

   Close and link to the next steps

   1 à 3 min

   The facilitator briefly reformulates the ideas that emerged from the sharing, without judging them. They say: “Here is what I hear emerging…” and then relate these elements to the rest of the workshop. Participants see how their contributions will be used, reinforcing the usefulness of the format. If necessary, the facilitator announces that a more in-depth debrief will follow.

   Tip — Do not let the ideas drift into the void. Even a synthesis of three points is enough to show that the collective voice has been heard and that it feeds into the next steps of the work.

Variants

• Remotely, use breakout rooms: 1 minute with the camera or microphone off to reflect alone, 2 minutes in pairs, 4 minutes in groups of four, then return to plenary to share one significant idea per group.
• With a very large group, limit the plenary to new ideas or nuances that have not yet been mentioned, in order to keep to the 5 minutes and avoid repetitions.
• For a sensitive question, ask participants to first write down their individual ideas before any exchange, then only share in pairs what they wish to make visible.
• To accelerate decision-making, ask each group of four to formulate their significant idea as a concrete action rather than an observation.