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Direct linkSolares, Armando; Kieran, Carolyn – Educational Studies in Mathematics, 2013
Our study concerns the conceptual mathematical knowledge that emerges during the resolution of tasks on the equivalence of polynomial and rational algebraic expressions, by using CAS and paper-and-pencil techniques. The theoretical framework we adopt is the Anthropological Theory of Didactics ("Chevallard" 19:221-266, 1999), in…
Descriptors: Algebra, Concept Formation, Mathematical Concepts, Mathematical Formulas
Peer reviewedGilbert, George L. – Journal of Chemical Education, 1998
Demonstrates the logical relationship between percentage composition and an empirical formula using a technique that depends on determining a minimum molar mass for the compound based on the mass percent of each element. (DDR)
Descriptors: Chemistry, Computation, Concept Formation, Higher Education
