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VanDerHeyden, Amanda M. – School Psychology Review, 2010
The National Mathematics Advisory Panel specifies that children should be able to fluently add and subtract whole numbers by the end of third grade. Mathematical understanding of addition and subtraction emerges well before formal mathematic instruction begins, and when it emerges it reflects competence in a number of prerequisite skills and…
Descriptors: Mathematics Instruction, Educational Research, Risk, Numeracy