People always say that handicapped could not study the basic concepts as a consequence of their experience in developing of normal skill and knowledge. While normal children are learning concepts with their families, it is unfortunate that handicapped children often have difficulty learning concepts without studying systemically in daily life. Among the causes of this difficulty, the families of the disabled children are assisting them more than they need,
and doing things despite of the fact that they manage to do it, or the families give away to despair, and they are not assisting their children by disregarding their disabilities [10].