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50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

Learn more about the history of ERIC here. PDF icon

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Azevedo, Flavio S. – Cognition and Instruction, 2011
Based on a three-year-long ethnography of the hobby of model rocketry, I present a practice-centered theory of interest relationships--that is, the pattern of long-term, self-motivated engagement in open-ended practices that has been theorized under the concept of "individual interests". In contrast to extant theories of individual interests, in…
Descriptors: Interests, Ethnography, Vocational Interests, Barriers
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Shechtman, Nicole; Roschelle, Jeremy; Haertel, Geneva; Knudsen, Jennifer – Cognition and Instruction, 2010
Using data collected in 125 seventh-grade and 56 eighth-grade Texas classrooms in the context of the "Scaling Up SimCalc" research project in 2005-07, we examined relationships between teachers' mathematics knowledge, teachers' classroom decision making, and student achievement outcomes on topics of rate, proportionality, and linear…
Descriptors: Mathematics Instruction, Mathematics Curriculum, Teacher Characteristics, Decision Making
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Falk, Ruma – Cognition and Instruction, 2010
To conceive the infinity of integers, one has to realize: (a) the unending possibility of increasing/decreasing numbers (potential infinity), (b) that the cardinality of the set of numbers is greater than that of any finite set (actual infinity), and (c) that the leap from a finite to an infinite set is itself infinite (immeasurable gap). Three…
Descriptors: Number Concepts, Experiments, Children, Adults