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Exercises/Divergent Ideation/Plus Delta Feedback
Ideation Warm-Up · Divergent Ideation

Plus Delta Feedback

Participants review a session by identifying what worked well (pluses) and what should change for the next session (deltas). The facilitator records responses on a shared chart visible to the whole room.

15 minutesTIME
4 to 24 peopleGROUP SIZE
In person, Remote, HybridSETTING
3 materialsMATERIALS
Planning pillar: Participation Architecture UWT groups this divergent ideation activity under Participation Architecture in its Gathering Effectiveness planning framework.

Choose this exercise

Purpose: Collect immediate participant feedback on what went well and what to adjust before the next session.

Use it when: Use at the end of a workshop module or at the close of a training day to evaluate the process and plan adjustments.

Skip it when: Skip when you need detailed qualitative evaluation, formal individual performance assessment, or when the team lacks psychological safety for open group reflection.

Group arrangement: Whole group reflection with individual silent thinking followed by open charting.

Timing: Source indicates 15 to 30 minutes; 15 minutes is standard for groups up to 24.

Materials and tools

Before participants arrive

  1. Draw a vertical line down the center of the whiteboard or flip chart.
  2. Label the left column with a plus symbol (+) for what went well.
  3. Label the right column with a Greek delta symbol (Δ) for what should change.
  4. Position the chart where all seated participants can read it.

Say this to open

We have 15 minutes to review our session. Look at the two columns on the board: Plus means what went well, what helped you work, or what you want to keep doing. Delta means what did not work as well, or what we should adjust for next time. Take one minute in silence to note one of each for yourself.

How to run it

  1. Introduce columns and silent reflection 3 minutes

    Explain the two columns: Plus (+) for effective practices or highlights, Delta (Δ) for adjustments or changes. Give participants 60 seconds to reflect silently on their experience.

  2. Gather plus items 5 minutes

    Ask participants to offer items for the Plus column. Write each distinct contribution verbatim or in brief summary words. Accept contributions without debating or defending. Cap contributions at 6 to 8 items to stay on schedule.

  3. Gather delta items 5 minutes

    Call for contributions for the Delta column. Remind participants to phrase deltas as constructive changes or forward-looking adjustments rather than personal complaints. For example, 'Take a five-minute stretch break every hour' instead of 'The morning was too long.' Record items directly on the chart.

  4. Review and close 2 minutes

    Read through the collected list aloud. Identify any items the facilitation team will act on immediately before the next session. Thank the group and photograph or preserve the chart.

Debrief questions

Finished output: A two-column chart displaying observable strengths and concrete adjustments for upcoming sessions.

Remote

Display a digital whiteboard or shared document divided into two columns labeled + and Δ. Give participants 2 minutes to post sticky notes into each column or type in the chat. Read and group the contributions aloud during the remaining time.

Hybrid

Open a shared online document or board that remote participants can edit directly while in-person participants call out items or write on sticky notes. Designate an in-person scribe to transfer room contributions to the shared digital board so both groups see the identical list in real time.

Access and participation choices

If the session gets stuck

Participants suggest vague complaints under Delta without an actionable change.
Ask the contributor: 'What specific adjustment would help fix that for tomorrow?' Record the adjustment rather than the complaint.
Participants start debating or justifying why an issue occurred.
Remind the room that all feedback is collected as individual perspectives without rebuttal or discussion during this exercise.

Terms used here

Live facilitator

Run this exercise live

The facilitator console stays in this browser. Its QR handoff is a short-lived participant snapshot containing only public exercise instructions, phase, prompt, and timer state.

Run this with your AI assistant +

Works with Claude, ChatGPT, Gemini, or your own local model: paste this prompt and your AI will co-facilitate this exercise with you.

Help me prepare and run the exercise below. First ask for my participant count, time, setting, access needs and intended result. Check these against the stated limits. Use the supplied rules and materials. Explain any proposed changes before using them, and label them as adaptations. Do not invent source claims or require personal disclosure. Give me one step at a time when I say start. I manage the people, physical activity and clock; do not claim to observe the room. Ask me what happened before choosing a next step.

Reference revision: 66f6c7179376fc85ebc02e40940151e3a7f95b65541a580251e11b8bfa3fe2ed

# Plus Delta Feedback

Participants review a session by identifying what worked well (pluses) and what should change for the next session (deltas). The facilitator records responses on a shared chart visible to the whole room.

**Time:** 15 minutes. Source indicates 15 to 30 minutes; 15 minutes is standard for groups up to 24.
**People:** 4 to 24. Whole group reflection with individual silent thinking followed by open charting.

## Choose this exercise

**Purpose:** Collect immediate participant feedback on what went well and what to adjust before the next session.
**Use it when:** Use at the end of a workshop module or at the close of a training day to evaluate the process and plan adjustments.
**Skip it when:** Skip when you need detailed qualitative evaluation, formal individual performance assessment, or when the team lacks psychological safety for open group reflection.

## Materials and tools

- 1 flip chart pad or whiteboard
- 2 dry-erase or flip chart markers
- 1 timer

## Before participants arrive

1. Draw a vertical line down the center of the whiteboard or flip chart.
2. Label the left column with a plus symbol (+) for what went well.
3. Label the right column with a Greek delta symbol (Δ) for what should change.
4. Position the chart where all seated participants can read it.

## Say this to open

We have 15 minutes to review our session. Look at the two columns on the board: Plus means what went well, what helped you work, or what you want to keep doing. Delta means what did not work as well, or what we should adjust for next time. Take one minute in silence to note one of each for yourself.

## How to run it

### 1. Introduce columns and silent reflection (3 minutes)

Explain the two columns: Plus (+) for effective practices or highlights, Delta (Δ) for adjustments or changes. Give participants 60 seconds to reflect silently on their experience.

### 2. Gather plus items (5 minutes)

Ask participants to offer items for the Plus column. Write each distinct contribution verbatim or in brief summary words. Accept contributions without debating or defending. Cap contributions at 6 to 8 items to stay on schedule.

### 3. Gather delta items (5 minutes)

Call for contributions for the Delta column. Remind participants to phrase deltas as constructive changes or forward-looking adjustments rather than personal complaints. For example, 'Take a five-minute stretch break every hour' instead of 'The morning was too long.' Record items directly on the chart.

### 4. Review and close (2 minutes)

Read through the collected list aloud. Identify any items the facilitation team will act on immediately before the next session. Thank the group and photograph or preserve the chart.


## Debrief questions

- Which delta represents the most practical change we can test tomorrow?
- Did any plus highlight an effective habit we should keep using?

**Finished output:** A two-column chart displaying observable strengths and concrete adjustments for upcoming sessions.

## Remote

Display a digital whiteboard or shared document divided into two columns labeled + and Δ. Give participants 2 minutes to post sticky notes into each column or type in the chat. Read and group the contributions aloud during the remaining time.

## Hybrid

Open a shared online document or board that remote participants can edit directly while in-person participants call out items or write on sticky notes. Designate an in-person scribe to transfer room contributions to the shared digital board so both groups see the identical list in real time.

## Access and participation choices

- Participants may speak aloud, submit items on written sticky notes, or type into chat.
- Participants may pass without sharing an item.

## If the session gets stuck

**Participants suggest vague complaints under Delta without an actionable change.**

Ask the contributor: 'What specific adjustment would help fix that for tomorrow?' Record the adjustment rather than the complaint.

**Participants start debating or justifying why an issue occurred.**

Remind the room that all feedback is collected as individual perspectives without rebuttal or discussion during this exercise.


## Terms used here

- Delta (Δ): The Greek letter delta, traditionally used in mathematics and facilitation to represent change or difference.

## Sources and adaptation

Observed in Relationship Makers Handbook, page 163. The underlying Plus/Delta retrospective format is a widely known lean and agile facilitation method with unverified original authorship.

Retained the standard Plus and Delta format, chart layout, and end-of-session timing from the source. Set the duration to 15 minutes, added silent reflection, concrete phrasing rules for actionable deltas, and hybrid facilitation logistics.

Current run sheet: https://unitedwetransform.com/exercises/feedback-plus-delta/

Sources and adaptation

Observed in Relationship Makers Handbook, page 163. The underlying Plus/Delta retrospective format is a widely known lean and agile facilitation method with unverified original authorship.

Retained the standard Plus and Delta format, chart layout, and end-of-session timing from the source. Set the duration to 15 minutes, added silent reflection, concrete phrasing rules for actionable deltas, and hybrid facilitation logistics.

See our editorial policy for AI use, sourcing and corrections.

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