Teaching numeration units: why, how and limits?

Enseigner les unités de numération : pourquoi, comment et limites ?

Catherine Houdement (1) , Frédérick Tempier (1)

1 LDAR (EA_4434) - Laboratoire de Didactique André Revuz

In French teaching practices there is currently a lack of consideration for the decimal (base ten) principle of numeration system for whole numbers. This is the reason why we implemented two experiments to strengthen this principle, giving a key role to the use of numeration units (ones, tens, hundreds …). The first one was led in the context of designing a resource for teachers in grade 3, the second one involved training teachers in grades 1 and 2. We analyze how students and teachers take into account numeration units and put them in relation with standard representations of numbers. Both exemplify the complexity of the teaching-learning process of numeration.

Mots clés: Base-ten; Place value; Numeration units; Whole numbers; Teaching

Domaines: Education

Catherine Houdement, Frédérick Tempier. Teaching numeration units: why, how and limits?. ICMI study 23: Primary Mathematics Study on Whole Numbers, Jun 2015, Macao, China. ⟨hal-01724586⟩