01165nam a22002771i 450099100083584970753620040205092540.0040220s1958 xxua||||||||||||||||eng b12677735-39ule_instARCHE-067607ExLDip.to Scienze pedagogicheitaA.t.i. Arché s.c.r.l. Pandora Sicilia s.r.l.513Marks, John L.483019Teaching arithmetic for understanding /John L. Marks, C. Richard Purdy, Lucien B. KinneyNew York [ecc.] :McGraw-Hill,1958429 p. :ill. ;24 cmMcGraw-Hill series in education.Curriculum and methods in educationAritmeticaInsegnamentoPurdy, C. Richardauthorhttp://id.loc.gov/vocabulary/relators/aut733804Kinney, Lucien B..b1267773502-04-1417-03-04991000835849707536LE022 MP 77 B 912022000098434le022-E0.00-l- 00000.i1318767317-03-04Teaching arithmetic for understanding1447090UNISALENTOle02217-03-04ma -engxxu01