Students were given a research question in context: If they were stranded on an unknown beach, would it be more efficient to send a sound message through water, ground, or air? We first defined criteria for an “efficient” message. Students then came up with their own experiment, performed it, and drew a conclusion based on their results. All throughout their work periods, students added material to a thoughtbook. At the end of the project, they submitted a lab report and their thoughtbook.