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Tobia, Valentina; Bonifacci, Paola; Marzocchi, Gian Marco – European Journal of Psychology of Education, 2016
Early calculation abilities in preschoolers are predictive of mathematics achievement in subsequent grades (e.g., Jordan et al. 2009). Two studies were conducted to evaluate concurrent and longitudinal predictors of early calculation skills. In the first study, 102 preschoolers (57.8% female; mean age?=?60.57?±?8.66 months) were given vocabulary,…
Descriptors: Computation, Preschool Children, Mathematics Achievement, Mathematics Skills
Klein, Mary F.; And Others – 1981
This report illustrates a network of procedures which can be used to solve problems involving the addition and subtraction of fractions. This network, which is based on a skills hierarchy, is used to classify seven levels of student competency. The determination of student competency depends upon the careful construction of error-diagnostic tests.…
Descriptors: Addition, Basic Skills, Competence, Computation

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