I ask the teachers I work with to identify an area they'd like to improve instructional practice in. Both they and I do a little research and they return the Increase Instructional Effectiveness form to me 2-3 days prior to when I'm to observe them.
After a 15-30 minute informal and non-evaluative observtion, I use this form to give feedback to the teachers I work with. This is great for team leaders, mentors, coaches, and even Administrators to give informal feedback. Enjoy!