Maher, C. A., Powell, A. B., Weber, K., & Lee, H. S. (2006). Tracing middle-school students' arguments. In S. Alatorre, J. L. Cortina, M. Sáiz & A. Méndez (Eds.), *Proceedings of the Twenty Eighth Annual Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education* (Vol. 2, pp. 403-410). Mérida, Mexico: Universidad Pedagógica Nacional.

Powell, A. B., & Hanna, E. (2006). Researching teachers' knowledge for teaching mathematics. In S. Alatorre, J.L. Cortina, M. Sáiz, & A. Méndez (Eds.), *Proceedings of the twenty-eighth annual meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education* (Vol. 2, pp. 377-383). Mérida, Mexico: Universidad Pedagógica Nacional.

Powell, A. B. (2004). The diversity backlash and the mathematical agency of students of color. In M. J. Høines & A. B. Fuglestad (Eds.), *Proceedings of the twenty-eighth conference of the International Group for the Psychology of Mathematics Education* (Vol. 1, pp. 37-54). Bergen, Norway: Bergen University College.

Powell, A. B., & Maher, C. A. (2003). Heuristics of twelfth graders building isomorphisms. In N. A. Pateman, B. J. Dougherty & J. T. Zilliox (Eds.), *Proceedings of the 2003 Joint Meeting of PME and PMENA* (Vol. 4, pp. 23-30). Honolulu: CRDG, College of Education, University of Hawai'i.

Powell, A. B., & Maher, C. A. (2002). Inquiry into the interlocution of students engaged with mathematics: Appreciating links between research and practice. In D. S. Mewborn, P. Sztajn, D. Y. White, H. G. Wiegel, R. L. Bryant & K. Nooney (Eds.), *Proceedings of the twenty-fourth annual meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education (Athens, Georgia) *(Vol. 1, pp. 317-329). Columbus, OH: ERIC Clearinghouse for Science, Mathematics, and Environmental Education.

Powell, A. B. (2002). Ethnomathematics and the challenges of racism in mathematics education. In P. Valero & O. Skovsmose (Eds.), *Proceedings of the Third International Mathematics Education and Society Conference *(Vol. 1, pp. 15-29). Copenhagen: Centre for Research in Learning Mathematics.

Powell, A. B., & Frankenstein, M. (2002). Paulo Freire's contribution to an epistemology of ethnomathematics. In *Proceedings of the Second International Congress on Ethnomathematics, 5-7 August.* Ouro Preto, Minas Gerais: Universidade Federal de Ouro Preto.

Powell, A. B., & Temple, O. L. (2002). Bridging past and present: Ethnomathematics, The Ahmose Mathematical Papyrus, and urban students. In *Proceedings of the Second International Congress on Ethnomathematics, 5-7 August.* Ouro Preto, Minas Gerais: Universidade Federal de Ouro Preto.

Powell, A. B. (1995). Criticalmathematics: Observations on its origins and pedagogical purposes. In Y. M. Pothier (Ed.), *Proceeding of 1995 Annual Meeting of the Canadian Mathematics Education Study Group *(pp. 103-116). Halifax: Mount Saint Vincent University.

Baldassarre, D., Broccoli, M., Jusinski, M. M., & Powell, A. B. (1993). Critical thinking and critical collective action in education: Race, gender, and the mathematical establishment. In W. Oxman & M. Weinstein (Eds.), *Critical Thinking as an Educational Ideal: Proceedings of the Fifth Annual Conference of the Institute for Critical Thinking, October 22-24 *(pp. 154-158). Montclair: New Jersey, Institute for Critical Thinking, Montclair State.

Powell, A. B. (1993). Pedagogy as ideology: Using Gattegno to explore functions with graphing calculator and transactional writing. In C. Julie, D. Angelis & Z. Davis (Eds.),* Proceeding of the Second International Conference on the Political Dimensions of Mathematics Education *(pp. 356-369). Cape Town: Maskew Miller Longman.

Powell, A. B., & Hoffman, M. R. (1991). Gattegno and Freire: A model for teaching mathematically underprepared, working-class students. In R. Noss, A. Brown, P. Drake, P. Dowling, P. Drake, M. Harris, C. Hoyles & S. Mellin-Olsen (Eds.), *Political dimensions of mathematics education: Action and critique: Proceedings of the first international conference, 1-4 April 1990,* Revised Edition. London: University of London.

Hoffman, M. R., & Powell, A. B. (1990). Working with underprepared post-Secondary students in a university setting. In E. Luna & S. González (Eds.), *Educación Matemática en las Américas VII *(pp. 305). Paris: UNESCO.

Frankenstein, M., & Powell, A. B. (1989). Mathematics education and society: Empowering non-traditional students. In C. Keitel, P. Damerow, A. Bishop & P. Gerdes (Eds.),* Mathematics, Education, and Society* (Document Series No. 35 ed., pp. 157-159). Paris: UNESCO.

Hoffman, M. R., & Powell, A. B. (1989). Mathematical and commentary writing: Vehicles for student reflection and empowerment. In C. Keitel, P. Damerow, A. Bishop & P. Gerdes (Eds.), *Mathematics, Education, and Society * (pp. 131-133). Paris: UNESCO.

Hoffman, M. R., & Powell, A. B. (1988). A study of the remedial teaching of mathematics. In L. Pereira-Mendoza (Ed.), *Proceedings of the 1988 Annual Meeting of the Canadian Mathematics Education Study Group, 2-6 June* (pp. 65-80). Winnipeg, Manitoba: University of Manitoba.

Dawson, A. J. S., & Powell, A. B. (1982). A selected bibliography on imaging, imagination, and mathematics. In Proceedings of the 1982 Annual Meeting of the Canadian Mathematics Education Study Group, 3-7 June. Kingston, Ontario: Queens University.
Hoffman, M., & Powell, A. (1981). Uses of Gattegno's number array. *In Proceedings of the 1980 Annual Meeting of the Canadian Mathematics Education Study Group, 6-10 June.* Québec: Université Laval.