• The Problem (concrete experience): a specific example drawn from readings, films, fieldwork, observations, or other sources.
• Initial Analysis (reflection, observation): defining the problem, discussing, brainstorming, creating categories, posing thought questions and rhetorical questions, deciding what to research and how to proceed.
• Research (abstract conceptualization): gathering information (library, internet, interviews, collecting data),evaluating info, explaining (teaching) to group members, building models, drafting papers or proposals, creating projects or prototypes.
• Reporting (active experimentation, presentation): communicating info, models, conclusions, and/or recommendations to teacher and students in form of simulations, fieldwork, reports, projects, or other "product". Reports lead students to consider new problems (hence back to #1).

(Taken from an Internet document. When I can identify author, etc. I will cite it properly.)