Gattegno’s mathematizing

De Geest, Els (2011). Gattegno’s mathematizing. In: Association of Teachers of Mathematics Conference 2011: Celebrating Gattegno, 18-21 Apr 2011, Wolverhampton, UK.



Gattegno states that only awareness is educable. In his book “The awareness of mathematization” he describes awareness of mathematics as the dynamics of (mathematical) relationships and uses mental activities to work on this. He argues that equivalence allows thinking in terms of what one is allowed to do to transform a problem. In this session we will play with the notions of equivalence, imagery and substitution in the context of mathematical tasks to explore Gattegno’s concept of mathematization: becoming aware of dynamics of mathematical relationships.

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