An Investigation into the Textbooks of Primary Schools Studied in Iran in the Academic Year 1387 - 88 in Terms of the Degree of Consistency in Attaching/ Detaching of Free or Bound Morphemes to/ from a Stem or Each Other

In this research all text books of primary school for the academic year of 1387– 88 are studied word by word, (with especial focus on the words having different written forms), the way they are written regarding inflectional and derivational morphemes and the degree of consistency in attaching/ detaching different morphemes to/ from each other. The work is conducted for all grades in a comparative way. Research population consists of all books of different grades of primary school studied in the academic year of 1387 – 88; data of the research consists of all words in books. Since all the words in these books are considered, no randomization is made. The research is descriptive, regarding the type of the research, and data collection and their analysis. Data analysis is done determining the frequency and percentage of morphemes in their attached/ detached spelling, and the probable inconsistency in their spelling. According to the findings of the research, there is some inconsistency within the same textbook, or textbooks of different grades in attaching/ detaching morphemes.