Students generate examples. Sometimes students are asked to record the progression of their thinking. I do not have a class to proceed with this at this time. Perhaps in the future. As the lesson progresses, we need to get information about whether the students are formulating and testing ideas.
Students describe thoughts.
Students discuss role of hypotheses and attributes. Students discuss type and number of hypotheses. Students analyze the strategies by which they obtain concepts. When it appears that the students have developed hypotheses that they are fairly sure of, they are asked to describe the progession of their thinking and the concept they have arrived at. When to do this is a matter of judgement.