Inaccurate mental addition and subtraction: causes and compensation.

From: Focus on Learning Problems in Mathematics | Date: June 22, 2004| Author: Cooper, Tom J.; Heirdsfield, Ann M. | Copyright information

Abstract

This paper reports on a study of seven Year 3 students' diminished performance in mental computation, and compares their mental architecture. Although all students were identified as being inaccurate, three students used some variety of mental strategies, while the other students used only one strategy that reflected the written procedure for each of the addition and subtraction algorithms taught in the classroom. Interviews were used to identify students' knowl...

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