01 / UNDERSTAND
What is brainwriting 6-3-5?
Brainwriting 6-3-5 is a structured form of written ideation. In the conventional format, six participants each write three ideas during a five minute round, then pass their sheets so others can add ideas or develop what they read.
After six rounds, the sheets can contain up to 108 entries. That is capacity for contributions, not a promise of 108 distinct or useful ideas. Adapted timings or group sizes can work, but should be described as adaptations.
Why use Brainwriting 6-3-5?
A spoken ideation session can reward quick responses and confident voices. Writing gives participants a defined contribution space and leaves a trace of how ideas develop. It does not remove every participation barrier: reading speed, language, typing and drawing preferences still matter.
When to use it
USE IT WHEN
The challenge is clear enough for participants to generate concrete responses.
A group needs space to contribute before a verbal discussion.
Building variations on other people’s ideas could broaden the exploration.
When to choose another method
Use How Might We when the challenge still hides a preferred solution.
Use 1-2-4-All when spoken development in small groups is more suitable.
Use User Interviews when the team lacks a grounded understanding of the problem.
What you’ll need
Prepare one sheet per participant, with six rows and three idea spaces per row. Explain the challenge, constraints and passing direction. Check access needs before imposing the pace. Allow sketches and short phrases, and plan time afterwards to clarify ideas without identifying a winner prematurely.
What the method needs
Keep the elements that help answer your question and support a decision.
A specific outcome with enough room for different approaches.
The conventional group size; record any adaptation.
A structure for separate contributions or variations.
A consistent handover so each sheet receives new input.
The sequence showing how a proposal changed.
The basis for selecting ideas after generation.
02 / PUT IT INTO PRACTICE
How to run a 6-3-5 brainwriting session
Keep evidence and assumptions distinct. Revisit your work when new information changes your understanding.
01
Explain the challenge
Check that participants interpret the desired outcome consistently. State constraints without supplying a model answer.
Ask how a borrower could recover from a missed collection.
02
Brief the process
Demonstrate one row and the passing direction. Explain that clarity matters more than polished writing.
Participants can use a small sketch with a short caption.
03
Write the first round
Give each person five minutes for up to three ideas without group discussion.
Leave space rather than padding the sheet with meaningless entries.
04
Pass and develop
Pass sheets in the agreed direction. Read earlier entries and add alternatives or useful developments in the next row.
Change the mechanism or condition, not only the wording.
05
Complete the circulation
Continue until each sheet has six rounds. Watch for fatigue or access barriers and record adaptations.
A pause for comprehension is more useful than enforcing speed at any cost.
06
Clarify and evaluate
Group related ideas, preserve significant differences and compare them against the challenge.
Use a separate evaluation step so repeated ideas do not automatically win.
Example: recovering from a missed collection
Fictional workshop: an equipment lending service wants to help people who miss a collection slot. One first round idea is a reminder. A later contribution adds an easy way to release the booking. Another develops a waiting list that offers the item to someone else.
These entries form an idea lineage rather than three independent endorsements of reminders. Another sheet proposes a staffed collection window that does not require a precise appointment.
During review, the team compares recovery routes and their staffing implications. It would investigate why collections are missed before testing a preferred approach. The illustration shows one invented idea lineage, not all six sheets or evidence that a workshop produced these results.
03 / BELOW THE SURFACE
Below the surface: repetition can look like agreement
Circulation creates useful influence, but it also makes contributions dependent on one another.
LINEAGE
Which idea did this develop?
Retain the chain without assigning ownership as merit.
DIFFERENCE
What changed in the mechanism?
Distinguish development from rewording.
EVALUATION
What supports choosing it now?
Use criteria beyond repetition.
An early reminder idea may shape several later entries. Counting each variation as a separate vote exaggerates support for the original direction. Keep generation history separate from evaluation.
During clustering, identify the initial mechanism and what each variation changes. Compare the family with alternatives that started elsewhere. A less repeated idea may simply have appeared late, when fewer people had an opportunity to develop it.
This is an editorial interpretation check for the review stage. It does not change the conventional procedure. Its purpose is to stop the apparent volume of a concept family from replacing a decision based on usefulness, constraints and evidence.
Brainwriting 6-3-5 companion worksheet
The companion provides one six round, three column sheet to copy for each participant. Page two supports clarification, comparison and a next test. The worksheet is original; the references describe the established brainwriting method.
Practical tips
Keep the challenge visible throughout circulation.
Make the review a separate activity with explicit criteria.
Common mistakes
Promising 108 unique ideas.
Treating repeated variations as independent votes.
Ignoring reading, language or motor access needs.
What you’ll get
A traceable set of ideas and variations, followed by a justified shortlist. Test a promising mechanism rather than presenting the total entry count as success.