This document reviews literature on differentiated instruction. It begins with an overview of differentiated instruction, which was developed by Carol Tomlinson in the 1970s and focuses on modifying content, process, product, and learning environment based on student needs. Three articles are then summarized: 1) A study applying differentiated instruction during elementary science lessons found it increased student participation and helped meet diverse learner needs. Teachers reported potential barriers like time and confidence with execution. 2) A case study of a student with dyslexia found that differentiated instruction increased his reading interest and confidence. 3) A study of physical education classes found those using differentiated instruction and Universal Design for Learning provided more support for students with disabilities.