Libby Garst, MSEd, is an instructional designer and staff developer for Learning Sciences International. She has created numerous resources on research-based instructional strategies for the LSI iObservation library and facilitated online courses for the Art and Science of Teaching master’s program for the National Institute for Professional Practice. She has been a successful teacher and instructional math coach at the elementary and middle school levels. Ms. Garst is a graduate of Virginia Tech and received her master’s degree from the University of Virginia. She is co-author with Dr. Robert J. Marzano and Carla Moore of Creating & Using Learning Targets & Performance Scales: How Teachers Make Better Instructional Decisions.