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Vlassis, Joelle – Learning and Instruction, 2004
This article focuses on the kinds of conceptual changes that occur when students have to deal with negative numbers in elementary algebraic operations. Interviews were carried out with twelve 8th-grade level students who were selected on the basis of their results in a test where they were required to reduce polynomials. The questions applied to…
Descriptors: Grade 8, Arithmetic, Numbers, Algebra