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Direct linkBlair, Mark R.; Watson, Marcus R.; Walshe, R. Calen; Maj, Fillip – Journal of Experimental Psychology: Learning, Memory, and Cognition, 2009
Humans have an extremely flexible ability to categorize regularities in their environment, in part because of attentional systems that allow them to focus on important perceptual information. In formal theories of categorization, attention is typically modeled with weights that selectively bias the processing of stimulus features. These theories…
Descriptors: Attention, Classification, Visual Perception, Experiments
Sinclair, Nathalie; Zazkis, Rina; Liljedahl, Peter – International Journal of Computers for Mathematical Learning, 2004
Recent research demonstrates that many issues related to the structure of natural numbers and the relationship among numbers are not well grasped by students. In this article, we describe a computer-based learning environment called "Number Worlds" that was designed to support the exploration of elementary number theory concepts by…
Descriptors: Mathematics Education, Mathematics Skills, Number Concepts, Numbers
