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Hitt, Fernando, Ed.; Santos, Manuel, Ed. – 1999
This two volume collection of proceedings contains working group reports, research reports, oral reports, poster session reports and discussion group reports presented at PME-NA 21. Only the plenary and research reports are full reports; the others are brief abstracts. Full reports include: (1) "Representation, Vision and Visualization:…
Descriptors: Algebra, Educational Assessment, Elementary Secondary Education, Functions (Mathematics)