Mystery Object, Critical Thinking, and Pretest

I’m teaching a course in critical thinking to college students. I showed them a glass case, asked them to think of five questions to determine what was inside and then to write down the questions. Next, I had them get in groups of 5-6 and read aloud their questions. Then, I asked them to think about the answers of others and their own answers. Finally, I asked them to rewrite their questions based on the questions they had heard. I was amazed at how many students did not change their questions. 20 questions became 100 questions. They handed in their original questions,their reflection and their “revised” questions. I realize that pre-assessment revealed much about their critical thinking and the skills that I have to teach them.