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Direct linkKilhamn, Cecilia – Research in Mathematics Education, 2018
Mathematically speaking, a "difference" is the result of a subtraction. However, when the number domain is extended from natural numbers to integers, the separation of the magnitude of a number from its value creates "different differences," where the connection to subtraction is no longer straightforward. Based on…
Descriptors: Arithmetic, Addition, Subtraction, Mathematics Instruction
Hassler Hallstedt, Martin; Klingberg, Torkel; Ghaderi, Ata – Journal of Educational Psychology, 2018
Using a randomized placebo controlled design, we examined the direct and follow-up effects (at 6 and 12 months) of a mathematics tablet intervention. Math training focused primarily on basic arithmetic (addition and subtraction facts up to 12), and secondarily on number knowledge and word problems. We investigated the moderating effects of IQ and…
Descriptors: Elementary School Students, Grade 2, Elementary School Mathematics, Arithmetic
