In ARI-LAB 2 the microworlds are environments
in which it is possible to build solving processes for
the problems.
The microworlds of ARI-LAB 2 provide
the user some basics (objects and functions) that can
be arranged to produce some effects (computational, graphic...).
The microworlds incorporate a sphere of knowledge described
in a model. They supply many ways to reach a fixed objective
and they allow, among other things, the direct manipulation
of objects.