How an when should place-value concepts and skills be taught?
Baroody, Arthur J
How an when should place-value concepts and skills be taught? - 281-286 - 21, No. 4, 1990
Febrero 1991 = JOURNAL FOR RESEARCH IN MATHEMATICS EDUCATION
ARITMETICA CONCEPTOS DEL NUMERO ENSE\197ANZA MATEMATICA MATEMATICAS DE LA ESCUELA ELEMENTAL METODOS DE ENSEÑANZA
How an when should place-value concepts and skills be taught? - 281-286 - 21, No. 4, 1990
Febrero 1991 = JOURNAL FOR RESEARCH IN MATHEMATICS EDUCATION
ARITMETICA CONCEPTOS DEL NUMERO ENSE\197ANZA MATEMATICA MATEMATICAS DE LA ESCUELA ELEMENTAL METODOS DE ENSEÑANZA