In our publication Professional Identity Development of Teacher Candidates Participating in an Informal Science Education Internship: A focus on drawings as evidence (full version available online) we used drawings and interviews to present case studies of teacher candidates' thinking before and after participation in an informal science after-school internship. Our goal was to see what change took place as a result of the experience using drawings as evidence.

The drawing is labeled with the terms "Teacher", "Questioning Students", "carpet", "rocks", "hammer", "mat", and "students".