Brainwriting (6-3-5)
Silent written idea generation and building on others' ideas
What is Brainwriting (6-3-5)?
Brainwriting (6-3-5) is a silent, written alternative to verbal brainstorming. Six people each write 3 ideas in 5 minutes, then pass their sheet to the next person who builds on those ideas. After 6 rounds, the group has generated up to 108 ideas in 30 minutes — without a single person dominating the conversation. It is especially effective for introverted team members, cross-functional groups, and teams with power dynamics that suppress candid input.
When to Use It
- •When quieter team members are not contributing in verbal brainstorming
- •When there are power dynamics that might suppress honest input (e.g., the boss is in the room)
- •When the team is geographically distributed and verbal brainstorming is impractical
- •As a warm-up before verbal brainstorming to get ideas flowing
How to Use It: Step by Step
- 1
Prepare the sheets
Give each participant a sheet with 6 rows and 3 columns. The top row is for their initial ideas.
- 2
Write 3 ideas (5 minutes)
Each person writes 3 ideas in the first row. Ideas should be brief but clear. No discussion.
- 3
Pass and build (5 rounds)
Pass the sheet to the next person. Read the previous ideas and write 3 more — building on, combining, or adding to what you see. Repeat 5 times.
- 4
Collect and review
Gather all sheets. Read every idea aloud. Group similar ideas into themes. You now have a rich pool of solutions built through collective intelligence.
Example
Reducing customer complaint response time
A team of 6 produced 87 unique ideas in 30 minutes (some cells had sub-ideas). Themes included auto-categorization of complaints, tiered response templates, escalation automation, and a customer self-service portal. The brainwriting approach surfaced an idea from a junior team member that would not have been voiced in a verbal session: a simple auto-reply that set expectations and reduced follow-up calls by 40%.
Pro Tips
- ✓Works well with 4-8 participants — adjust the "6" in 6-3-5 to match your group size
- ✓Allow extra time for reading in later rounds as sheets accumulate more ideas
- ✓Remind participants: building on someone else's idea is just as valuable as writing a new one
- ✓Combine with verbal brainstorming afterward: "Which ideas on the sheets sparked new thinking?"
Facilitation Guide
Hold a 60-minute idea generation session. Set ground rules: no criticism, quantity matters, build on ideas (5 min). Run silent brainwriting round — each person writes 3 ideas and passes to the next person, repeat 5 times (30 min). Read all ideas aloud and cluster into themes on a wall (15 min). Do a quick round-robin where each person adds one more idea inspired by the clusters (10 min). Count total ideas and celebrate the quantity.
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