This paper studies the effects of information and communication technologies (ICT) in the school environment on educational achievement. To quantify these effects, the impact is evaluated of a project run by the municipality of Guayaquil, Ecuador, which provides computer-aided instruction in mathematics and language to students in primary schools. Using an experimental design, it is found that ...

This work explores the effects of using automatically generated hints in problem solving tutor environments. Generating hints automatically removes a large amount of development time for new tutors, and it also useful for already existing computer-aided instruction systems that lack intelligent feedback. We focus on a series of problems, after which, previous analysis showed the control group i...

Helping people with severe and profound developmental disabilities acquire and maintain constructive occupation is an objective of great practical importance. During the last 15-20 years, studies directed at this goal have largely relied on five strategies of self-management of instruction cues. Those strategies consist of the use of (1) picture cues presented on sets of cards, (2) picture cues...

Student modeling has been identi ed as an important component to the long term development of Intelligent Computer-Aided Instruction (ICAI) systems. Two basic approaches have evolved to model student misconceptions. One uses a static, prede ned library of user bugs which contains the misconceptions modeled by the system. The other uses induction to learn student misconceptions from scratch. Her...