How can I list and describe two key components of differentiated instruction?

Answer 1

Differentiated instruction is an approach to teaching essential content in ways that address the varied learning needs of students with the goal of maximizing the possibilities of each learner. Try CONTENT and PROCESS:
http://www.cast.org/publications/ncac/ncac_diffinstruc.html

http://www.frsd.k12.nj.us/rfmslibrarylab/di/differentiated_instruction.htm
http://tst1160-35.k12.fsu.edu/mainpage.html