Design Thinking for Educators (IDEO) site describes the five stages of design thinking:
1. DISCOVERY: I have a challenge. How do I approach it?
2. INTERPRETATION: I learned something. How do I interpret it?
3. IDEATION: I see an opportunity. What do I create?
4. EXPERIMENTATION: I have an idea. How do I build it?
5. EVOLUTION: I tried something. How do I evolve it?