Hi Debra, I think you're doing a great courtesy to your students when you precede field trips or guest speakers for questions or observations for students to look for. It's interesting that even beginning students can be good at critiquing what's good and what stands out as less than professional of poor examples of workmanship in practice. I tell students you can "just get by or you can fly! Which type do you want to exemplify?". Good field trips can help sort these questions out in the minds of the students. Barry Westling