Rehabilitation of number processing and calculation skills

The main purpose of this article is to present the research that has been d one on the rehabilitation of number and calculation disorders. It is argued that theoretically based rehabilitation of arithmetical processing require s the formulation of a detailed functional diagnosis based on a theoretical ly driven evaluation of numerical processing and calculation skills. Up to now, the strategies that have been adopted in this rehabilitation field hav e mainly consisted in attempts to re-teach lost knowledge via extensive pra ctice. These therapeutic programmes are described in two domains: the trans coding of numerals and the retrieval of arithmetical facts. Finally, the au thors underline the necessity to develop in the near future programmes of r ehabilitation adopting a more ecological perspective.