Several hypermedia environments have been expanded in the last few years with the intention of promoting the acquisition of knowledge forward a wide range of topics and developing problem-solving abilities.

Several hypermedia environments have been expanded in the last few years with the intention of promoting the acquisition of knowledge forward a wide range of topics and developing problem-solving abilities. However, there are many different and sometimes conflicting claims about the capability of these environments to prefer meaningful learning. We have make knowned a hypermedia learning environment with a tutorial constituent that exploits Artificial Intelligence techniques. This hypermedia, called Logiocando, targets a special category of users, namely children of the fourth plain of primary school (9-10 years old) to teach them basic universals of logic. Two empirical evaluations of the educational