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Liu, Ru-De; Ding, Yi; Xu, Le; Wang, Jia – Journal of Educational Research, 2017
The authors' aim was to examine the relation between two-digit mental multiplication and working memory. In Study 1, involving 30 fifth-grade students, we used digit span backward as an abbreviated measure of working memory. In Study 2, involving 41 fourth-grade students, working memory comprised measures of phonological loop, visuospatial…
Descriptors: Short Term Memory, Mental Computation, Multiplication, Elementary School Students
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Ding, Yi; Liu, Ru-De; Xu, Le; Wang, Jia; Zhang, Dake – Journal of Educational Research, 2017
The authors' aim was to examine the relations among mental multiplication, working memory load (WML), and automaticity by alternating the difficulty level of task characteristics. In Experiment 1, involving 30 fifth-grade students with mixed abilities, a 2 (WML) × 2 (automaticity) design was utilized. In Experiment 2, involving 21 high-achieving…
Descriptors: Short Term Memory, Multiplication, Correlation, Grade 5
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Liu, Ru-De; Ding, Yi; Zong, Min; Zhang, Dake – School Science and Mathematics, 2014
The aim of this study was to examine the concept development of decimal numbers in 244 Chinese elementary students in grades 4-6. Three grades of students differed in their intuitive sense of decimals and conceptual understanding of decimals, with more strategic approaches used by older students. Misconceptions regarding the density nature of…
Descriptors: Concept Formation, Concept Teaching, Elementary School Students, Elementary School Science