TY  - JOUR
AU  - Marta Molina
AU  - Encarnación Castro
AU  - John Mason
TI  - Elementary School Students´ Approaches to Solving True/False Number Sentences.
JO  - PNA
PY  - 2008
SP  - 75
VL  - 2
IS  - 2
PB  - mathdoc
UR  - https://geodesic-test.mathdoc.fr/item/PNA_2008__2_2_43748/
LA  - en
ID  - PNA_2008__2_2_43748
ER  -