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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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Gilmore, Camilla K.; Papadatou-Pastou, Marietta – Mathematical Thinking and Learning: An International Journal, 2009
Some theories from cognitive psychology and mathematics education suggest that children's understanding of mathematical concepts develops together with their knowledge of mathematical procedures. However, previous research into children's understanding of the inverse relationship between addition and subtraction suggests that there are individual…
Descriptors: Mathematics Education, Individual Differences, Meta Analysis, Concept Formation
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Baroody, Arthur J.; Lai, Meng-lung; Li, Xia; Baroody, Alison E. – Mathematical Thinking and Learning: An International Journal, 2009
Little research has focused on an informal understanding of subtractive negation (e.g., 3 - 3 = 0) and subtractive identity (e.g., 3 - 0 = 3). Previous research indicates that preschoolers may have a fragile (i.e., unreliable or localized) understanding of the addition-subtraction inverse principle (e.g., 2 + 1 - 1 = 2). Recognition of a small…
Descriptors: Subtraction, Arithmetic, Number Concepts, Mathematics Instruction
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Baroody, Arthur J.; Lai, Menglung – Mathematical Thinking and Learning: An International Journal, 2007
Previous research, which typically overestimated competence, indicates that preschoolers have an unreliable or a localized understanding of the addition-subtraction inverse principle (e.g., 2 + 1 - 1 = 2). Forty-eight Taiwanese 4- to 6- year-old participants were tested with a relatively conservative measure to gauge when a reliable and general…
Descriptors: Algebra, Preschool Children, Mathematics Skills, Foreign Countries