Collaborative workshop

Working an important subject as students dropout Definitely the method I prefer is the scavenger hunt.  

Why?

because this is a good method that bring us many opportunities to  combine some other collaborative methods: for example, the step by step discussions where learners make into small groups and go through a series of questions and activities to build knowledge.  Preparing questions and activities before that kind of  workshop allow us to predict the results.  The major challenge is to make materials in a creative way.   The other method that scavenger hunt promotes is learning by doing because  the teacher gives instructions and  stimuli the students to start working.