- An Krum, W (2006), Differentiated Instruction Reading Instruction in one Exemplary Teachers Classroom, A case Study, Unpublished Thesis ED, University of Pittsburg.
- Baumgartner, T, & Rush, C (2003), Increasing Reading Achievement of Primary and Middle School Students Through Differentiated Instruction, Master's Dissertation, Saint Xavier University & Skylight, Chicago.
- Chamberlin, M, (2011), The Potential of Prospective Teachers Experiencing Differentiated Instruction in Mathematics Course, International Electronic Journal of Mathematics Education, Oct, Vol. (6), Issue. (3), Pp. (134- 156).
- Curtis, J (2005), Pre Service Teachers Attitudes toward Gifted Students and Gifted Education, Approved by the Committee on the Degree of Doctor of Education, Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Education in Teachers College, Columbia University.
- Elbert, C & Baggett, C (2003), Teacher Competence for Working with Disabled Students as Perceived by Secondary Level Agricultural Instructors in Pennsylvania, Journal of Agricultural Education, Vol. (44), No. (1), Pp. (105- 115).
- Hobson, L (2008), An Analysis of Differentiated Strategies used by Middle School teachers in Heterogeneously Grouped classrooms, Unpublished Master's Thesis, University of North Carolina Wilmington.
- Hubbard, D (2009), The Impact of Different Tiered Instruction for English Language Learners at the Secondary Level with A Focus on Gender, Unpublished thesis M. A California State University.
- Johnson, E (2010), Improving Students, Academic Achievement through Differentiated Instruction, Walden University.
- Koeze, A (2007), Differentiated Instruction: the effect on Student Achievement in an Elementary School, Published Thesis ED, Eastern Michigan University.
10. Leavitt, M & Geake, J (2009), Giftedness Perceptions and Practices of Teachers in Lithuania, Gifted and Talented International, Vol. (24), No. (2), Pp. (139 - 148).
11. Mills, C (2003), Characteristics of Effective Teachers of Gifted Students: Teacher background and Personality Styles of Student, Child quarterly, Vol. (47), No. (4).
12. New York Teacher Certification Examination (2006), PreparationGuideGifted Education CTS (64),the University of State of New York State Education Department, Office of Teaching Initiatives, Albany, New York, New York State Teacher Certification Examinations™," and the "NYSTCE.
13. Risko, V& et al (2009) Crossing Boundaries and Initiating Conversations about RTI: Understanding and Applying Differentiated Classroom Instruction, The Reading teacher, Vol. (63), No. (1), Pp. (84- 87).
14. Shaffer, D (2011), The Effects of Differentiated Instruction on Grade 7 Math and Science Scores, Doctoral Dissertation, Walden University, Pro - Quest Dissertations and Theses, No. (884225980).
15. Tomlinson, C, (2001), How to Differentiate Instruction in Mixed Ability Class room, Virginia: ASCD.
16. Watts- Taffy, S & et al (2012), Differentiated Instruction Making Informed Teacher Decisions, The Reading Teacher, Vol. (66), Issue. (4), Pp. (303 - 314).
17. Wises, B (2004), Trends in Special Education Teacher Preparation and in Service Needs, PH. D, The University of Lowa, USA.