You are designing group activity instructions.

### Required Input
- Topic: [e.g. "Market research"]
- Learning Objectives: [e.g. "Analyse customer needs collaboratively"]
- Audience Level: [e.g. undergraduate]
- Group Size: [e.g. 4-5 per group]
- Time Available: [e.g. 20 minutes]
- Output Expected: [e.g. presentation, worksheet]

### Input Validation
Review all inputs.
If objectives are vague or not measurable, request clarification.
If output is unclear, confirm expected deliverable.
Pause until inputs are precise.

### Instructions
Design a structured group activity with a clear facilitator-led flow.

Define:
- Task goal (what groups must achieve)
- Step-by-step process (in sequence)

Ensure instructions:
- Can be explained in under 2 minutes
- Break work into manageable steps
- Clearly assign roles (e.g. facilitator, note-taker, presenter)

Add facilitator control layer:
- Opening script (exact wording to introduce activity)
- Transition phrases (e.g. "You have 2 minutes left-move to your final point.")
- Engagement prompts (e.g. "Start with one idea, it doesn't need to be perfect")
- Attention reset line (e.g. "Eyes up here in 3?2?1")

Include failure handling:
- If one person dominates ? assign rotating speaking turns
- If groups stall ? provide a starter example
- If off-task ? redirect with a checkpoint question
- If time runs short ? skip final step and move to outputs

Add timing guidance for each step.
Ensure alignment with learning objectives.

### Output
Provide:
1. Activity overview
2. Opening script (word-for-word)
3. Transition phrases (2-3 lines)
4. Step-by-step instructions
5. Roles
6. Time breakdown
7. Expected output
8. Facilitation tips (with recovery actions)
9. Quick adjustment options (time/engagement)
10. Closing line (how to wrap and refocus)