Powell, A. B., & Vogt, L. (1993). Columbus: Liar, slaver, murderer, thief. *Radical Teacher, *43.

Powell, A. B. (2006). Preface. In P. Gerdes (Ed.), *Sona geometry from Angola: Mathematics of an African tradition* (pp. 7-10). Milano: Polimetrica.

Powell, A. B. (1999). Forward to Geometry from Africa: Mathematical and educational explorations. In P. Gerdes (Ed.), *Geometry from Africa: Mathematical and educational explorations *(pp. v-viii). Washington, DC: Mathematical Association of America.

Powell, A. B. (1998, March 19). Effective remedies toward math empowerment a review of S. Manigault (1997). *The Book for Math Empowerment: Rethinking the Subject of Mathematics. Black Issues in Higher Education,* 28.

Gerdes, P. (2007). *Drawings from Angola: Living mathematics* (A. B. Powell, Translation from Portuguese to English. Original title: *Desenhos da África*, São Paulo: Editora Scipione, 1990.): Lulu.

Gerdes, P. (2006). *Sona geometry from Angola: Mathematics of an African tradition*. (Translated by Arthur B. Powell from Portuguese to English). Milano: Polimetrica.

Gerdes, P. (1994). *Sona Geometry: Reflections on the tradition of sand drawings in Africa South of the Equator.* Maputo, Mozambique: Ethnomathematics Research Project, Instituto Superior Pedagógico, 200 pp. (Translation from Portuguese to English. Original title: *Geometria Sona: Reflexões sobre uma tradição de desenho em povos da África ao Sul do
Equador*)

Gerdes, P. & Bulafo, G. (1994). *Sipatsi: Technology, Art and Geometry in Inhambane. *Maputo, Mozambique: Ethnomathematics Research Project, Instituto Superior Pedagógico, 102 pp. (Translation with Paulus Gerdes from Portuguese to English. Original title:
*Sipatsi: Tecnologia, Arte e Geometria em Inhambane*)

Powell, A. B. (Submitted) Participatory Research: Humanizing Mathematics to Empower Students and Teachers, in M. L. Watt (Ed.) *Action Research and the Reform of Mathematics and Science Education: Purposes, Practices, Potential.* New York: Teachers College.

Powell, A. B., Francisco, J. M., & Maher, C. A. (2001, 19 October). *An analytical model for studying the development of mathematical ideas using videotape data.* Paper presented at the Twenty-third annual meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education, Snowbird, Utah.

Powell, A. B., Jeffries, D. A., & Selby, A. E. (1989). * An empowering, participatory research model for humanistic mathematics pedagogy.*
Humanistic Mathematics Network Newsletter (4), 29-38.

Powell, A. B. & Ramos, C. (1993/1990). * Reading Mathematics Textbooks: Seven Successful Strategies.* Newark, NJ: Academic Foundations
Department (now Department of Urban Education), Rutgers University.

Powell, A. B. (2003). *"So let's prove it!": Emergent and elaborated mathematical ideas and reasoning in the discourse and inscriptions of learners engaged in a combinatorial
task.* Published doctoral dissertation, Rutgers, The State University of New Jersey, New Brunswick.