. "mathematics education; elementary pupils; problem solving"@en . . "A preliminary experiment from 2011 showed that a number of pupils have difficulties to discover and use certain advanced strategies in solving certain tasks. The same outcome has come from a long-term observation in a school class. Children often preferred the trial-and-error method and were not able to move backwards or use some other advanced strategies which they had discovered before. They also had significant problems with unsolvable tasks." . . "11410" . "RIV/00216208:11410/13:10194803" . "CHARLES UNIV PRAGUE" . "%22EXHIBITION GROUNDS%22: FROM THE TRIAL-AND-ERROR METHOD TOWARDS PROBLEM SOLVING STRATEGY" . . "Praha" . . "[22BFE8A22629]" . "%22EXHIBITION GROUNDS%22: FROM THE TRIAL-AND-ERROR METHOD TOWARDS PROBLEM SOLVING STRATEGY" . "RIV/00216208:11410/13:10194803!RIV14-MSM-11410___" . . "Havl\u00ED\u010Dkov\u00E1, Radka" . . "73902" . "000329448800049" . "2013-08-18+02:00"^^ . . "%22EXHIBITION GROUNDS%22: FROM THE TRIAL-AND-ERROR METHOD TOWARDS PROBLEM SOLVING STRATEGY"@en . "S" . . "978-80-7290-637-6" . "PRAHA 1" . "1"^^ . "TASKS AND TOOLS IN ELEMENTARY MATHEMATICS" . . . "1"^^ . . . . "2"^^ . "%22EXHIBITION GROUNDS%22: FROM THE TRIAL-AND-ERROR METHOD TOWARDS PROBLEM SOLVING STRATEGY"@en . . . "A preliminary experiment from 2011 showed that a number of pupils have difficulties to discover and use certain advanced strategies in solving certain tasks. The same outcome has come from a long-term observation in a school class. Children often preferred the trial-and-error method and were not able to move backwards or use some other advanced strategies which they had discovered before. They also had significant problems with unsolvable tasks."@en .