We use Action-Process-Object-Schema (APOS) theory to study students' geometric understanding of partial derivatives of functions of two variables. This study contributes to research on the teaching and learning of differential multivariable calculus and its didactics. This is an important area due to its multiple applications in science,…

Much of the evidence provided in support of the argument that mathematical knowing is embodied/enacted is based on the analysis of gestures and bodily configurations, and, to a lesser extent, on certain vocal features (e.g., prosody). However, there are dimensions involved in the emergence of mathematical knowing and the production of mathematical…

Analyzes the individual and collective activities of fourth grade students while trying to explain a school fellow's mistake in the use of a geometrical schema for the sunshadows phenomenon. Aims at detecting productive links between context-related argumentation and mathematical modeling as well as discussing their relevance for mathematics…