Realities from GeoGebra

Dynamic geometry is to geometry as movies are to photographs. Enhancing its use in the classroom is one of the tasks of the European project Intergeo. We are particularly interested in achieving this through GeoGebra, a dynamic geometry software that allows the simultaneous visualization of two, or even three, Views (graphic, algebraic and tabular) of the same objects. This possibility allows us to observe the variations taking place in every kind of illustration when the user makes any changes. This is a very useful educational feature…