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This study was premised on the Community of Inquiry model and a qualitative method approach was used with an online individual semi-structured interview protocol as the data collection instrument to collect and analyse data gathered from the respondents’ individual interviews. A case study design was used with six participants (3 lecturers and 3 students) being sampled. The participants comprising three (3) Mathematics education lecturers, and three (3) Mathematics education students (preservice teachers) either in the first, second or third year of study in Mathematics education. Interviews were conducted online with the participants through Skype and Zoom. A thematic analysis was used to identify themes and patterns. The findings of the study revealed that the participants, understanding the use of social media, have transformed their teaching and learning in higher education institutions. Apart from making the shift from face-to-face teaching to teaching online using a technology-based independent mode to continue teaching in the Covid-era, lecturers have experienced academic well-being through a change in their pedagogy and teaching approaches as Mathematics lecturers. This change has ensured that students are exposed to a more student-centred approach through the use of social media platforms which has enhanced students’ learning of Mathematics. Recommendations are made.

Globalization and rapid technological change have made knowledge a critical determinant of competitiveness in the world’s economy. Online education has been auspicious and adjustable even to students with tight schedules. However several critical success factors need to be improved in order to enhance the effective learner experience. This paper is aimed at uncovering the impact of three critical success factors namely; instructional design, learner interaction and learner technology adaptation on learner experience. Hence, the discretions of 300 students were diagnosed using the Likert scale questionnaire ranging from strongly agree to strongly disagree. The Holm Bonferroni method from R- package version 0.88 (2021 edition), was engaged to reduce the family-wise error (FWER) associated with multiple hypothesis comparison. It was observed that at a 5% level of significance, the alternative hypothesis was acceptable in favor of the null hypothesis and the conclusion was that instructional design, learner interaction, and technology adaptation, have a direct impact on the learning experience of the learner. The adopted models for the three critical success factors were validated by the Fornell and Larcker's (1981) convergent reliability test and tolerable with high composite reliability of 0.71. In accordance with the adopted model, a well instructional design is suggested for compliance.