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Peer reviewedEngelhardt, Jon M.; Usnick, Virginia – School Science and Mathematics, 1991
Presented are the results of two pilot studies about multidigit addition and subtraction. The results are discussed in relation to possible alternative sequences in the teaching of addition and subtraction and the relationship between basic fact mastery and numeration concept attainment. (CW)
Descriptors: Addition, Elementary School Mathematics, Mathematics Education, Mathematics Instruction
