May I bounce some ideas?

Having spent three great weeks in Africa, I would like to incorporate at least some things into my teaching. I want to set up a research study and actually try to prove the hypothesis that this project does make a difference on my students' performance/course outcomes. Have you heard of any similar studies? Of course, I will do a thorough lit review; just want to make sure I don't miss anything. Many thanks for any ideas, suggestions, etc.!