In virtually all subject fields, there is an increase in the number of books
available to readers. From an educational point of view, this could be attributed to curricula changes which stimulate authors and publishers to produce new texts to meet new demands. In Nigeria, such curricular changes have been numerous since the seventies. The resulting volumes of reading materials have created problems for teachers with respect to selection because the professional responsibility of seeking Ways to
minimize difficulties which might impede learning rightly starts with the selection of textbooks that would present minimum comprehension problems to students.