, Volume 46, Issue 3, pp 389–406 | Cite as

Student reasoning about the invertible matrix theorem in linear algebra

Original Article


I report on how a linear algebra classroom community reasoned about the invertible matrix theorem (IMT) over time. The IMT is a core theorem that connects many fundamental concepts through the notion of equivalency. As the semester progressed, the class developed the IMT in an emergent fashion. As such, the various equivalences took form and developed meaning as students came to reason about the ways in which key ideas involved were connected. Microgenetic and ontogenetic analyses (Saxe in J Learn Sci 11(2–3):275–300, 2002) framed the structure of the investigation. The results focus on shifts in the mathematical content of argumentation over time and the centrality of span and linear independence in classroom argumentation.


Linear algebra Adjacency matrices Collective activity 


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Copyright information

© FIZ Karlsruhe 2014

Authors and Affiliations

  1. 1.Department of MathematicsVirginia TechBlacksburgUSA

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