%0 Journal Article
%A Molina, Marta
%A  Castro, Encarnación
%A  Mason, John
%T Elementary School Students´ Approaches to Solving True/False Number Sentences.
%J PNA
%D 2008
%P 75-86
%V 2
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PNA_2008_2008_1_a5/
%G en
%F PNA_2008_2008_1_a5