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9 p, 263.0 KB La ecuación lineal con dos variables : entre la unicidad y el infinito / Panizza, Mabel (Universidad de Buenos Aires) ; Sadovsky, Patricia (Universidad de Buenos Aires) ; Sessa, Carmen (Universidad de Buenos Aires)
In this work we show the results of a study we have done on 6 students dealing with two variable linear equations, when they have previously elaborated a conception --in the context of one variable linear equation-- according to which equations are numerical equalities and letters are numbers to be discovered. [...]
1999 - 10.5565/rev/ensciencias.4073
Enseñanza de las ciencias, V. 17 N. 3 (1999) , p. 453-461  

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