Observe Mr. Bates’s questioning technique closely. It might be helpful to write down the pivotal questions verbatim as they are posed to the class, the manner in which they are asked, their frequency, and their type. Added to this data you might want to record how well the class responded to these questions, including the number of students who responded and the length of the ensuing discussion. Armed with this objective data, you will be better able to provide accurate feedback to Mr. Bates.