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Direct linkNamkung, Jessica M.; Fuchs, Lynn S. – Learning Disabilities Research & Practice, 2012
The purpose of the study was to examine differences in early numerical competencies, as well as subtraction skill, as a function of children's mathematics difficulty (MD) status: computational difficulty (CD), word problem-solving difficulty (PD), concurrent difficulty (CDPD), or neither difficulty (i.e., typically developing; TYP). Based on…
Descriptors: Grade 2, Subtraction, Numeracy, Number Concepts
Download full textKlein, 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
