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Operator thinking
Ruppeldtová, Janka ; Hejný, Milan (advisor) ; Hošpesová, Alena (referee) ; Harminc, Matúš (referee)
Resumé The initial goal of the thesis was to nd out the ability of pupils to understand the text of additive word problems, grasp their objects and relations, distinguish numerical data in the function of states and operators, solve such word problems, correctly interpret acquired results, but also to detect possible obstacles to solving or reasons for a pupil's failure in order to draw methods how to eliminate them. After realizing some pre-experiments the goal was shifted to a qualitatively higher level { to investigate the level of an individual's operator thinking via specic word problems, additive word problems with operators, and to design possible ways how to develop a scheme of an individual's operator thinking. For illustrating our research tool we present an example of word problems of a conceptual character and a situation of a procedural character both containing only operators. Bob is 13cm taller than Adam. Chris is 4cm shorter than Bob. Compare the height of Chris and Adam and say how many cm Chris is taller or shorter than Adam. In January the price of a coat was reduced by 500 Sk. Then in February the price rose by 800 Sk, but in March it went down again by 600 Sk. For our purpose we used the assigned word problem for pupils in dierent research methods, such as interview, tests, transfer...
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