Author
National Council of Teachers of Mathematics
10
Mathematical Association of America
8
Society for Industrial and Applied Mathematics
6
Association of Teachers of Mathematics
4
Sociedad Colombiana de Matemáticas
3
Universidad Nacional de Colombia. Departamento de Matemáticas
3
Association for Computers in Mathematics and Science Teaching (U.S.)
2
Cambridge University Press
2
Central Association of Science and Mathematics Teachers (U.S.)
2
Consortium for Mathematics and Its Applications (U.S.)
2
International Association for Mathematical Geology
2
International Scholarly Research Network
2
Korean SIGCAM
2
Mathematical Association
2
Mathematics Education Research Group of Australasia
2
Red Latinoamericana de Etnomatemática
2
Rose-Hulman Institute of Technology
2
SPARC (Organization)
2
School Science and Mathematics Association (U.S.)
2
Universitatea "Babeș-Bolyai."
2
Zhongguo ke xue yuan. Shu xue yan jiu suo
2
Zhongguo shu xue hui
2
Abrate, Raquel Susana
1
Akademii͡a nauk SSSR. Quantum Bureau
1
Alberta Teachers' Association. Mathematics Council
1
American Association of Physics Teachers
1
Applied Probability Trust
1
Association for Mathematics Education of South Africa
1
Association of Teachers of Mathematics in the Middle States and Maryland
1
Australian Association of Mathematics Teachers
1
Balıkesir Üniversitesi. Necatibey Eğitim Fakültesi
1
Banach Mathematical Research Group
1
Barrow-Green, June, 1953-
1
British Society for Research into Learning Mathematics
1
Calcutta Mathematical Society
1
Cambridge Philosophical Society
1
Canadian Mathematical Society
1
Carbó, Liliana
1
Comité Latinoamericano de Matemática Educativa
1
Cornell University. Library
1
Československá akademie věd. Matematický ústav
1
Deutsche Mathematiker-Vereinigung
1
Društvo matematičara Srbije
1
Duke University Press
1
ERIC Clearinghouse for Science, Mathematics, and Environmental Education
1
East Carolina University
1
Edinburgh Mathematical Society
1
Escola d'estiu Marina-Safor
1
Escuela Regional de Matemáticas Corporation
1
Estany, Anna
1
more ...