| 1 | O. Clifford Ugorji Felicia. King-Agboto C. Catherine Okpara. (2023, January), "Effect of using instructional Materials in enhancing teaching and learning of Mathematics in Junior Schools in Obio-Akpor LGA of Rivers state", AJOL OPEN ACCESS, Vol. -9, (Issue -1), pp 135-143 |
| 2 | Basil CE Oguguo, Lotobi R Awele, Clifford O Ugorji, Roseline N Azubuike, Catherine U Ene, Felicia C Ugwu, Chinonso N Ojinnaka, Judith N Eke, A Ihediohanma Chukwuka, Zephyrinus I Aririguzo, Roseline I Ezechukwu. (2022, May), "Psychometric Measurement of Accounting Multiple Choice Questions Achievement Test for the assessment of students with Special Needs.", International Journal of Early Childhood Special Education, Vol. -14, (Issue 3) |
| 3 | Oguguo, B.C.E,Nannim, F.A, Okeke, A.O., Ezechukwu, R.I, Christopher, G.A & Ugorji, C.O. (2020, May), "Assement of students' Data Literacy skills in Southern Nigeria Universities.", Universial Journal of Educational Resarch, Vol. -8, (Issue -6), pp 27-2717-2726 |
| 4 | Basil C.E Oguguo1, Agnes O. Okeke1, Priscilla O. Dave-Ugwu1, Christopher A. Ocheni1, Clifford O. Ugorji2, Ijeoma Hope N. Nwoji1 & Iheanacho C.. (2020, June), "Assessment of ICT Skills Relevant for Effective Learning Possessed by Undergraduate Students at University of", International Journal of Higher Education, Vol. -9, (Issue 4), pp 206-215 |
| 5 | Roseline Ifeoma Ezechukwu1, Basil Chinecherem, E. Oguguo2,*, Catherine U. Ene2 & Clifford O. Ugorji3. (2020, April), "Psychometric Analysis of Economics Achievement Test Using Item Response Theory", World Journal of Education, Vol. 10, (Issue -2), pp 59-68 |
| 6 | Eleje, Lydia & Esomonu, Nkechi & Okoye, Romy & Agu, Ngozi & Ugorji, Clifford & Okoi, Arikpo & Abanobi, Chidiebere.. (2020, November), "Students’ Academic Achievement in Secondary-School Quantitative Economics: Effect of Feedback with Remediation.", Research gate |
| 7 | Ugorji, C. O and Obi, K. C. (2019, April), "Creativity and Creative Ability in The Evaluation of Primary School Mathematics", Unknown Journal or Publisher |
| 8 | Ekwonye, E. C ; Ugorji, C O and Okoroafor, S A. (2019, February), "Evaluation of Principal -- Students Personnel Management in Imo State Secondary schools, Nigeria.", International Multidisciplinary Academic Research Journal (IMARJI). |
| 9 | Amadi, V. C ; Ugorji, C. O and King--Agboto, F. O. (2019, January), "Effects of Guided Discovery on Knowledge Retention and Achievement in Chemistry Among Students in Tertiary Institutions in South East, Nigeria", International Journal of Educational and Scientific Research (IJOEASR) |
| 10 | Obi, K. C and Ugorji, C. O.. (2019, January), "Task Number and Cognitive Levels As Determinants for Item Difficulty", International Journal of Education and Scientific Research |
| 11 | Ugorji , C.O ; Onyeka, J. N and Onuekwusi, C. N. (2019, February), "Versatility in The Use of Research Designs : An Effective Tool For Creativity In Educational Research in Imo State, Nigeria.", International Multidisciplinary Academic Research Journal (IMARJI |
| 12 | Ugorji, C. O and Ukozor, F. I. (2018, November), "Development of Algebraic Processes Readiness Test for Senior Secondary School Students in Imo State", International Journal of Advanced Scholastic Research |
| 13 | Obi, K. C ; Ugorji, C. O and Osuigwe, C. C. (2018, July), "Teacher Effectiveness and Instructional Delivery in Primary School Mathematics : A Pre--requisite for Basic Educational Achievement", International Multidisciplinary Academic Research Journal. |
| 14 | Uzomah, P.N. and Ugorji, C. O.. (2011, November), "Effect of Two Approaches in Teaching Solid Shapes on Students Achievements in Junior Secondary Mathematics.", Nigerian Journal of Educational Research and Evaluation (NAERE) |
