Dissertation (MA Education)This study aimed at designing and developing activity based exemplary materials to enhance the teaching and learning of oral comprehension skills of expression among the secondary school students in Tanzania. The study designed interactive exemplary materials and tried out the materials to evaluate their effectiveness and efficiency in enabling the learners to develop confidence in self-expression. Questionnaires, interviews, classroom observations, documentary reviews, and pre-and post-tests were used to collect data. The quasi experimental design was used using a control and an experimental group. The study findings and observations showed that the materials and the approach have helped teachers in enhancing students‟ learning and increased teachers „pedagogical content knowledge. Students were active, motivated and could perform many activities suggested, and increased their oral Comprehension Skills. There was no statistical significance in the increase of performance in the experimental classes as the outcome of the approach and materials used. The study recommends that the Ministry of Education should provide in-service training for English language teachers to update their pedagogical knowledge and skills. The Ministry should also encourage teachers and researchers to design exemplary learning materials that would facilitate teaching and learning through the competence based curriculum. English teachers should use designed and tested materials in the teaching of selfexpression. In addition, more similar studies are encouraged to be conducted using a large sample to build competence on the same aspect.