We want to study in depth about the mathematics learning of student with Attention Deficit  and/or Hyperactivity Disorder  (ADHD) in the secondary school.
    Despite the increasing number of students diagnosed with ADHD in schools, between a 3% and 5%, there are not many studies about the difficulties of these students in mathematics. In the last years there have been done depth studies about the deficit, and there are some researchers, Americans mainly, (Anderson, 1987; Aves 1988; Esser, 1990, Pelham et al, 1992; Shaffer et al, 1996c; Wolraich et al, 1996), who distinguished between different types of ADHD. This studies allow us to know which are the consequences of the deficit in the academic learning. The studies about mathematics learning (Geary, 1993; Ackerman, Anhaldt, Dykman, and Holcomb, 1986a, 1986b; Zentall, 1990; Casajús, 2005) show that the students with deficit have lower academic results than students without deficit and point out as one of main difficulties the mistakes of calculation in the solution of mathematics activities. Some studies about the solution of mathematics problems (Casajús, 2005) show the difficulties that these students have solving problems, that usually are not problems of how they set out them, but they are mistakes in the basic arithmetic operations, usually done because of their lapse of concentration.
    Even though the increasing number of computers in schools, we do not have studies about how to take part in the learning of these students with the use of computer science, either with learning mathematics programs that are designed with this aim, like the program  of the Ministry of Education (Descartes) or other institutions; or designing a new portal web with a specific help system to this kind of students. There has been already done the portal AUDIMAT (Giménez Muria and Rosich, 2005),  http://www.xtec.es/~smuria/projecte/index.htm, to the teaching and learning of geometry in secondary school by deaf students integrated in the ordinary classroom.
    We think that this kind of model which uses a personalized help system can be useful for the possible designed of a new portal that we want to developed and experiment with student with ADHD. What is more, the study expected to provide a methodology guide for teachers and families to improve the performance in mathematics. This project will be in Basque and Spanish, but the intention is to translate into English in the future, because of the trend towards the trilingualism in education and to do it more useful out of our country.

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