TY  - BOOK
AU  - Ben-Chaim,David
AU  - Keret,Yaffa
AU  - Ilany,Bat-Sheva
TI  - Ratio and proportion : : reseach and teaching in mathematics teachers' education (pre-and in-service mathematics teachers of elementary and middle school classes) / 
SN  - 9789460917820
PY  - 2012///
CY  - Rotterdam : 
PB  - Sense Publishers, 
KW  - Profesores de matemáticas
KW  - Formación profesional
KW  - Matemáticas
KW  - Estudio y enseñanza
ER  -