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THIS WORK EXPLORES THE URBAN EXPERIENCES OF STREET CHILDREN IN SAO PAULO,
BRAZIL THROUGH THE MATHEMATICAL EPISTEMIC REGIMES AT THE CORE OF THEIR
SURVIVAL STRATEGIES. WE ALSO DRAW ATTENTION TO THE SITUATION OF STREET
CHILDREN ACROSS TIME, SPACE, CULTURE, AND HISTORY. OUR GOAL IS TO
RECOGNIZE, UNDERSTAND, AND VALIDATE FORMS OF MATHEMATICS CONSTRUCTED AND
USED OUTSIDE OF THE ESTABLISHED INSTITUTIONS OF MATHEMATICAL PRODUCTION.
WE BASE OUR ANALYSIS ON "THE MATHEMATICAL IMAGINATION", WHICH DRAWS
TOGETHER SOCIAL CONSTRUCTIONISM AND ETHNOMATHEMATICS. THEORETICALLY, WE
DRAW HEAVILY ON THE DURKHEIMIAN TRADITION IN SOCIOLOGY AND ANTHROPOLOGY.
WE FOCUS ON A FORM OF PRACTICE THAT LINKS THE FORMAL AND THE INFORMAL IN
ORDER TO REALIZE THE FULL POWER OF MATHEMATICAL KNOWLEDGE AS A SOCIAL
THING (IN DURKHEIM'S SENSE), A PRODUCT OF THE COLLECTIVE CONSCIOUSNESS
THAT EXPRESSES COLLECTIVE REALITIES AND A CATEGORY OF KNOWLEDGE PRESENT
IN EVERY CULTURE. THIS IS AS TRUE FOR MATHEMATICS AT THE MARGINS AS IT IS
FOR PROFESSIONAL MATHEMATICS. OUR WORK CONTRIBUTES TO AN EMERGING
POLITICAL MANIFESTO OF THE MARGINAL THAT DEMONSTRATES THE SOCIAL
REALITIES AND SOCIAL POWER OF THEIR MATHEMATICS. THIS BOOK SHOULD BE OF
INTEREST TO SOCIAL SCIENTISTS, STUDENTS OF MATHEMATICS AND
ETHNOMATHEMATICS, AND EVERYONE INTERESTED IN THE SITUATION OF
MARGINALIZED CHILDREN.
