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100 17th 18th 1d 2004 3d abstraction achievment acquisitionist acting action actionresearch active activism activity activitytheory adaptive advanced ae aera affective affordances africa agency agent agents aggregation ai aided aied05workshop alethiometer alexander algebra algebraic algorithm algorithms algrithm alife aminal analysis and animal animated animation anstraction ant antcolony antropology ants anxiety apes apos apprenticeship approach appropriation aquisition architecture argument argumentation arithmetic arrays art artefacts artificial as_conv assistance assisted atomicunification attention authoring autobiographic automata autonomous autoring avantgarde axioms ayal background basic basics becta behavior behaviour belief beliefs bernstein bibtex-import biological biology blackboard blind blogs boredom boundary bounded bourdieu boxer brain bruner buckminster buddhism building cabri calculators calculus campus cardinality cas categorization category cellular century 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