Visit of former Sac State professors offers ethnomathematics perspective on teacher prep

International scholars Dr. Daniel Orey (professor emeritus from Sac State) and Dr. Milton Rosa (graduate of the EdD program) visited Sac State from the Federal University of Ouro Preto in Brazil on April 9.  Their presentation, “Exploring Dialogic Approaches in EthnoModelling: Translating Local and Global Mathematical Knowledge,” studies the relationship between mathematics and culture.

Dr. Orey and Dr. Rosa discussed their work with pre-service teachers and master’s students in Brazil, using long-distance technology and traditional face-to-face courses, while using an ethnomathematics perspective to create innovative future teachers. 

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Milton Rosa and Daniel Orey

From 1999-2010 Dr. Rosa taught math at Encina High School, and was a graduate of the first cohort of the Doctorate in Educational Leadership at Sacramento State in 2010.

Dr. Orey and Dr. Rosa have published numerous books, articles and chapters, and given numerous workshops, talks and speeches in numerous countries.

Biographical information:

Milton Rosa is a professor of mathematics education in the Departamento de Educação Matemática in the Instituto de Ciências Exatas e Biológicas at the Universidade Federal de Ouro Preto, where he works with distance education and master degree students in the mathematics education program. He has experience in Mathematics Education acting on the research areas such as ethnomathematics, mathematical modeling, ethnomodeling, curriculum and instruction, educational leadership, and distance education. Dr. Rosa has published articles, chapter books, and books mainly in ethnomathematics and ethnomodeling in Portuguese, Spanish, and English. His works appear in Brazilian and international journals. He has participated in conferences and congresses in Brazil and international levels; with contributions of plenaries, speeches, and roundtables. He also participates in: a) International Study Group of Ethnomathematics (ISGEm), b) North America Study Group of Ethnomathematics (NASGEm), c) Red Latinoamericana de Etnomatemática (RED), d) Grupo de Estudo e Pesquisa em Etnomatemática (Study and Research Grupo on Ethnomathematics in Brazil, and e) Topic Study Group on Ethnomathematics (TSG35) from the International Conference on Ethnomathematics (ICME).

Daniel Clark Orey is Professor Emeritus at California State University, Sacramento and currently is a professor of mathematics education in theDepartamento de Educação Matemática in the Instituto de Ciências Exatas e Biológicas at the Universidade Federal de Ouro Preto, where he works with distance education and master degree students in the mathematics education program. In 1998, at the invitation of Professor Ubiratan D’Ambrosio, Dr. Orey served as a Fulbright Scholar at the Pontifícia Universidade Católica de Campinas in Brasil, where he conducted research in classrooms and taught courses in ethnomathematics and mathematical modeling. He is also a Senior Fullbright Specialist to Kathmandu University. He has published articles in numerous Brazilian and international journals, chapter books, and books in English, Portuguese, and Spanish. He has also participated in Brazilian and international conferences by giving lectures, speeches, and participating in roundtables about ethnomathematics. Currently, Prof. Orey serves as the coordinator of the Ethnomathematics Research Group at  the Universidade Federal de Ouro Preto and participates in: a) International Study Group of Ethnomathematics (ISGEm), b) North America Study Group of Ethnomathematics (NASGEm), c) Red Latinoamericana de Etnomatemática (RED), d) Grupo de Estudo e Pesquisa em Etnomatemática (Study and Research Grupo on Ethnomathematics in Brazil, and e) Topic Study Group on Ethnomathematics (TSG35) from the International Conference on Ethnomathematics (ICME).

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