Ball, Deborah Leowenberg
With an eye on the mathematical horizon : dilemmas of teaching elementary school methematics
- 374-397
- 93, No. 4, 1993
Agosto 1993
= THE ELEMENTARY SCHOOL JOURNAL
EDUCACION MATEMATICA ENSE\197ANZA MATEMATICA ESTUDIANTES DE LA ESCUELA ELEMENTAL GRADO 4 METODOS DE ENSEÑANZA