Abstract
Technology allows new kinds of tasks revealing the meaning of theoretical objects.
But creating these new tasks is not easy and requires time. We will present the
learning tasks of a new type allowed by dynamic geometry software and try to explain why
it takes time for teachers to design and use these tasks. Examples will be given in Cabrigeometry,
existing both as a software program or application of the calculators TI 92, TI
89 and TI 83.