One person's research that really stuck out to me was Carol Ann Tomilnson. Every time I modified my search I noticed at least 2 articles or books by her came up and she was referenced in a couple of articles that I choose for my Literature review list.
Her work focuses on differentiation. She discusses how the need has increased due to diversity in the classroom. She stresses how differentiation should revolve around the student's readiness, interest and learning profile and should include some form of technology. She explains how teachers need to give quality instruction and produce academically responsive classrooms.
Her research relates to my driving question because her approach to "one size fits all" classrooms as being ineffective correlates to my need of classrooms needing to respond all the needs of all learners even if they are "gifted" and/or an "early finisher". I noticed in my research both terms were used to describe the same student. Her work has also been helpful because she offers designs and tools for gifted students.