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1. Define a Problem
2. Brainstorm Possible Solutions
3. Generate ideas
4. Research Ideas & Explore Possibilities
5. Specify Criteria & Identify Constraints
6. Consider Alternative Solutions
7. Select an Approach
8. Develop Written Design Proposal
9. Make Model/
Prototype
10. Test & Evaluate
11. Refine/Create
12. Communicate Results
What are 3 out of the 12 of the engineering design process?