Readability of basic science textbooks for junior secondary schools in Enugu state, Nigeria


Mercy Ifunanya Ani
David Onyemaech Ekeh
Abigail Chikodinaka Obodo
Pauline Obiageli Neboh
Festus Iornem Tafi


Introduction: Textbooks are essential component of the educational system that were heavily utilized by teachers and learners. Basic Science textbook authors should review the language structure and terminologies to enhance the readability of Basic Science textbooks.

Purpose: The study aimed at analyzing the adequacy in the readability level of the recommended Basic Science textbooks in use junior secondary schools Enugu State, Nigeria.  

Methodology:  An evaluation research design was adopted for this study. The population consisted of all the 60 recommended Basic Science that were approved for teaching of Basic Science in Junior Secondary Schools in Enugu state, Nigeria. The sample size of this study comprised of 33 recommended Basic Science textbook. Purposive sampling technique was used to draw eleven (11) recommended Basic Science textbooks each from JSS1, JSS 2 and JSS 3. The readability of the textbook was determined using Flesch-Kincaid Readability Formula. The researchers subjected the instrument to content validation by three experts, with internal consistency reliability estimate of 0.92. Microsoft office word 2010 was used to assess the readability. The mean of the readability scores for each Basic science textbooks was determined and interpreted using the Flesh’s interpretation readability scores relative to Nigerian schools.

Results: The findings of this study revealed that almost all the Basic Science textbooks are adequate and can easily be understood by the students. 

Recommendations: The researchers recommended that the recommendation of Basic Science textbooks should not be based on the reputation of the publishers and the lobbying abilities but should be based on more objective criteria that relate to the textbook quality with the students as the principal focus.



How to Cite
Ani, M. I., Ekeh, D. O. ., Obodo, A. . C. ., Neboh, P. O. ., & Tafi, F. I. . (2021). Readability of basic science textbooks for junior secondary schools in Enugu state, Nigeria. Journal of Educational Research in Developing Areas, 2(1), 13-23.


  1. Abani, L. C. (2002). Simplified basic science textbook. Anconard Publisher Limited.
  2. Adeniyi, E. O. (2007). 9-year basic science and technology curriculum. NERDC.
  3. Agbasimalo, N. (2009). Basic science for junior secondary schools. Upper Basic 1- 3. Kawuriz & Manilas Publishers Ltd.
  4. Agbor, A. C., & Bola, T. P (2012). Readability of basic science textbooks prescribed for junior secondary schools and students’ performance in reading comprehension in Benue State, Nigeria. British Journal of Arts and Social Sciences, 9(1), 89-96.
  5. Ali, A. (2006). Conducting research in education and the social sciences. Tashing Network Ltd.
  6. Ani, M. I. (2016). Evaluation of basic science textbooks used in Nigerian secondary schools Unpublished Ph.D Thesis, University of Nigeria Nsukka.
  7. Ashiakpa, A. G. (2006). New edition: Junior secondary basic science, Books 1-3. DeVerage Agencies.
  8. Bajah,et. al (2011). Basic science for junior secondary schools, UBE edition. Books 1- 3. University Press PLC.
  9. Emereole, H. U., & Rammiki, R. (2004). Content evaluation of physics textbooks used in botswana secondary schools. Mosenodi, Journal of Botswana Education Research Association,12(1&2), 69 – 81.
  10. Enugu State Ministry of Education (2014). Enugu state annual school census report. Government Press.
  11. Federal Ministry of Education (FME) (2013) National policy on education (4th ed). NERDC.
  12. Federal Ministry of Education (1981). Core curriculum for integrated science for junior secondary schools. NERDC.
  13. Flesch, R. F. (1964). A new readability yardstick. Journal of Applied Psychology, 32, 221-233.
  14. Fry, E. (2002). Readability.
  15. Jegede, O. J., Oyegbanji, P., & Brown, D. P. (2009). Basic science for Nigerian junior secondary schools, Books 1-3. Macmillan Nigeria Publishers Ltd.
  16. Lawrence, W. P. (2011). Textbook evaluation: A framework for evaluating the fitness of the honking new secondary school (NSS) curriculum. Masters Degree Project, Department of English, City University of Hong Kong.
  17. Ndu, F. O. C., Ndu, L. O., Olarewaju, A. O., & Somoye, E. O. (2009). UBE Edition: Basic: An integrated science course for junior secondary schools, Books 1-3. Longman Nigeria PLC.
  18. Nworgu, B. G. (2015). Educational research. Basic issues and methodology. (2nd & Enlarge ed.). University Trust Publishers.
  19. Okolo, P. C. (2011). Content evaluation and readability of some recommendedintegrated science textbooks used in Enugu state junior secondary schools. Unpublished master’s degree Dissertation, Enugu State University of Science and Technology, Enugu.
  20. Okolo, K. N. (2010). Model basic science for junior secondary schools, Books 1-3. Edu-Edy Publications.
  21. Omiko, A. (2008). Evaluation of Chemistry textbooks in use in secondary schools in Ebonyi State of Nigeria. Unpublished Ph.D Thesis, Ebonyi State University Abakaliki.
  22. Omiko, A., & Abonyi, S. O. (2011). Evaluation of Chemistry Textbooks in use in Nigerian secondary schools. Journal of the Science Teachers association of Nigeria, 46(1), (July), 136-148
  23. Onoh, C. E. C., & Onoh, M. N. (2012). Comprehensive basic science for secondary schools, UBE Edition, Books 1-3. Cheston Agency Press Ltd.
  24. Science Teachers’ Association of Nigeria (STAN) (2010). Nigerian basic science project, pupils textbook 1-3(New Edition). Ibadan: EBN Publishers.
  25. Ugwa, M. C. (2009). Basic science for universal basic education (UBE); Books 1-3. MasFounders publication Ltd.