³³ Miller-Peterson, Susan and Mercer, Cecil D. Educational Aspects of Mathematics Disabilities. Journal of Learning Disabilities. Volume 30, Number 1, pp. 47-56. January/February. 1997. <http://www.ldonline.org/ld_indepth/math_skills/mathld_mercer.html>.

³⁵ Garnett, Kate. Ph.D. Math Learning Disabilities. Division for Learning Disabilities Journal of CEC. November, 1998. <http://www.ldonline.org/ld_indepth/math_skills/garnett.html>.

³⁶ Miller-Peterson and Mercer. <http://www.ldonline.org/ld_indepth/math_skills/mathld_mercer.html>.

³⁷ Miller-Peterson and Mercer. <http://www.ldonline.org/ld_indepth/math_skills/mathld_mercer.html>.

³⁸ Pedrotty Rivera, Diane. Using Cooperative Learning To Teach Mathematics To Students With Learning Disabilities. LD Forum: Council for Learning Disabilities. Austin, Texas: The University of Texas. Spring, 1996. <http://www.ldonline.org/ld_indepth/math_skills/coopmath.html>.

³⁹ Perry, Kay. What is project based learning? 1999. <http://www-tcall.tamu.edu/newsletr/jul99/jul99a.htm>.

⁴⁰ Imel, Susan. Collaborative Learning In Adult Education. Eric Digest # 113. 1991. <http://www.ed.gov/databases/ERIC_Digests/ed334469.html> No longer available at website
and Johnson, David and Roger. What Makes Cooperative Groups Work? <http://www-inst.eecs.berkeley.edu/~cs301/2002/fall/group.work.htm>.

⁴¹ Prescott, Susan. More Tips For Getting Started in CL. Cited in Cooperative Learning: Professional Development Series ED 460271.1992.

⁴² Prescott (1992).

⁴³ Imel (1991). <http://www.ed.gov/databases/ERIC_Digests/ed334469.html>. No longer available at website

⁴⁴ Prescott (1992).