for the learning of mathematics

Abraham Arcavi - Vol. 28 Num. 2 (2008)
 Modelling with graphical representations


Traditionally, the modelling of situations in mathematical language consists of creating symbolic expressions, working with and through them using mathematical principles and procedures, and arriving at results which are then reinterpreted in terms of the situation. Technology has provided means to study situations also using graphical models not as mere illustrations but as powerful tools in their own right (to be used before, in parallel, and even instead of symbolic models). Examples of this kind of modelling are presented and their use is illustrated. The educational value of graphical modelling and its implications are discussed.


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