Many DRK-12 projects seek to document changes in classroom instruction. To that end, researchers often seek to use or create reliable instructional observation instruments. In Part 1 of this Learning Series webinar, we will hear from researchers who have used or designed these tools in their DRK-12 research. Participants will learn about a range of tools, their various uses and limitations, in the hopes of generating ideas for other project designs. Following the webinar on September 28, we will have a follow-up webinar (date TBD), where participants can consult with the presenting researchers to get feedback on their own research designs.