00749nam a2200229Ia 4500 232682 BIBL 20160527183404.0 730314s1975 mx a b 00000 spa 72080894 n-us--- QA13 .K62 372.7/3/044 Kline, Morris Local 120773 Why Johnny can't add: the failure of the new math. Spanish El fracaso de la matemática moderna Morris Kline ; traducción de Santiago Garma. Méxioc Siglo Veintiuno Editores 1975. 197 p. illus. 22 cm. 6.95 Bibliography: p. [196]-197. Mathematics Study and teaching United States. Local 132758 173040 173040 0 0 0 372_730000000000000_K65W_E 0 l 24375 1 1 1 2016-05-27 329365 0 372.73 K65w E 60000002013081 2016-05-27 00:00:00 r:232682 6