RT Journal Article
T1 Children's understanding  of the commutative law of addition
A1 Bermejo Fernández, Vicente
A1 Rodríguez Marcos, Purificación
AB This study analyzes the bases that support the comprehension ami development of the commutative law of addition. We presented two commutative tasks (compare sums and find the unknown addend)  to 72 children  from  5 to 8 years  of  age.  Within  each  task we varied the presence/absence of the result, and the kind-of-addend. In  general,  our results show that children focus mainly on the addends in judging the equivalence between two commuted pairs. Equally, the errors and strategies analysis offers evidence of the children's inclination to focus on the addends, although older children also center on the results, especially in sorne conditions. Finally, we tentatively suggest a five level model of understanding of commutativity.
PB Pergamon
SN 0959-4752
YR 1993
FD 1993
LK https://hdl.handle.net/20.500.14352/60165
UL https://hdl.handle.net/20.500.14352/60165
LA spa
DS Docta Complutense
RD 7 abr 2025