TY  - BOOK
AU  - Burns, Marilyn
AU  - Winson, Beth
TI  - Math standards in action. Primary focus : introducing multiplication. Intermediate focus: numeration and place value
KW  - CONCEPTOS MATEMATICOS
KW  - MATEMATICAS DE LA ESCUELA ELEMENTAL
KW  - MULTIPLICACION
N1  - Abril 1993
ER  -