TY - JOUR T1 - Čo všetko nám prezradí jednoduchá úloha A1 - Kupková, Erika JA - Obzory matematiky, fyziky a informatiky Y1 - 2000 VL - 29 IS - 3 SP - 14 EP - 19 SN - 1335-4981 N2 - 12-years old children are given three or four different answers to the same mathematical problem. They have to decide which of them are right and why. Their strategies of result checking are studied and analyzed. ER - |