Abstract
This presentation discusses 9bservationsandfindings of classroom-based research focused on ways of developing
children's mathematical understanding through authentic, situated activities. Instructional and heuristic~lly
structured activities were used to foster discussion, argumentation and resolution among alternative constructions,
allowing children to engage in the social construction of notions compatible with ideas that· had· evolved
historically, through social and cultural forces in the wider community.
GEORGE BOOKER
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