%0 Journal Article
%A Marta Molina
%A Encarnación Castro
%A John Mason
%T Elementary School Students´ Approaches to Solving True/False Number Sentences.
%J PNA
%D 2008
%P 75
%V 2
%N 2
%I mathdoc
%U https://geodesic-test.mathdoc.fr/item/PNA_2008__2_2_43748/
%G en
%F PNA_2008__2_2_43748