This study examined teachers’ digital competence and effective classroom instructional delivery in senior secondary schools in Port Harcourt Metropolis. The study was guided by five research questions and five hypotheses. The population of the study was 1,877 teachers. Correlational Research Design was adopted for the study. Krejcie and Morgan (1970) sample size table was used to arrive at a sample size of 320. Multistage sampling technique was adopted to sample the 320 teachers across the schools in the two Local Government Areas in Port Harcourt Metropolis. Two self-structured questionnaires titled Teachers Competence Inventory for the independent variable and Classroom Lesson Delivery Questionnaire for the dependent variable were used for data collection. The two instruments were designed using four-point rating scale of strongly agree, agree, disagree and strongly disagree. The validation of the instrument was ascertained by two experts of Educational Technology and one in Measurement and Evaluation of the Department of Educational Foundations, Rivers State University, Port Harcourt. The reliability of the instruments was tested using 30 teachers from Government Army Secondary School Elele, Ikwerre Local Government Area, and overall indices of 0.82 for Teachers Competence Inventory and 0.79 for Classroom Lesson Delivery were obtained using Cronbach Alpha statistics. The data collected was analyzed using Pearson’s Product Moment Correlational (PPMC) statistics to answer research questions and test hypotheses at 0.05 level of significance. The findings revealed strong positive relationship between teachers’ digital competence and effective classroom instructional delivery in Smartphones, Open Educational Resources, PowerPoint, WhatsApp, while YouTube obtained moderate relationship. The hypotheses were rejected because there were significant relationships across all areas of digital technology. Therefore, it was recommended that regular orientation on the changes in the smartphones apps be given to keep teachers acquainted with what is new in the use of Smartphones.

Keywords: Digital Competence, Instructional Delivery, Digital Literacy, Educational Technology, Classroom Effectiveness.