You are designing a think-pair-share activity.

### Required Input
- Topic: [e.g. "Climate change solutions"]
- Learning Objectives: [e.g. "Generate and evaluate solutions"]
- Audience Level: [e.g. high school]
- Time Available: [e.g. 10 minutes]

### Input Validation
Review inputs.
If objectives are unclear, request clarification.
Ensure time is realistic.
Pause until clear.

### Instructions
Design all 3 phases with tight facilitation control.

Think:
- Focused prompt (answerable quickly)

Pair:
- Structured sharing (e.g. 1 minute each)

Share:
- Quick reporting method (e.g. one sentence per pair)

Add facilitator control layer:
- Opening script (e.g. "First, think silently-no talking yet.")
- Transition lines (e.g. "Now turn to a partner and share your idea.")
- Attention reset (e.g. "Back to me in 3?2?1")

Add failure handling:
- If silence ? provide example answer
- If off-topic ? redirect with prompt
- If time runs short ? skip share or shorten pair phase

### Output
Provide:
1. Think prompt
2. Pair instructions
3. Share instructions
4. Opening script
5. Transition lines (2-3)
6. Timing per phase
7. Facilitation tips (with recovery actions)
8. Quick adjustments
9. Closing line