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Direct linkHackenberg, Amy J.; Tillema, Erik S. – Journal of Mathematical Behavior, 2009
This article reports on the activity of two pairs of sixth grade students who participated in an 8-month teaching experiment that investigated the students' construction of fraction composition schemes. A fraction composition scheme consists of the operations and concepts used to determine, for example, the size of 1/3 of 1/5 of a whole in…
Descriptors: Numbers, Concept Formation, Grade 6, Mathematics Instruction
Levenson, Esther; Tsamir, Pessia; Tirosh, Dina – Journal of Mathematical Behavior, 2007
This study investigates two sixth grade students' dilemmas regarding the parity of zero. Both students originally claimed that zero was neither even nor odd. Interviews revealed a conflict between students' formal definitions of even numbers and their concept images of even numbers, zero, and division. These images were supported by practically…
Descriptors: Number Systems, Grade 6, Mathematics Instruction, Mathematical Concepts
