Browsing Teses e dissertações by Subject "Elementary School Students"
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(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Psicologia - PPGPsi, , 14/12/2012)Research has shown that some properties of the additive problem may cause difficulties to solve it. The most important are: the problems presentation form, the semantic structure and the position of the unknown. Two ...