The study examined the effects of Team Teaching Strategy on Junior Secondary School Students’ Performance in Basic Science in Ekiti State, Nigeria. Specifically, the study was designed to ascertain the difference in the pre-test and post-test mean scores of students exposed to team teaching strategy and conventional method. This study adopted a pre-test and post-test two group quasi experimental design (one experimental group and one control group). The population of the study comprised 21,677 junior secondary three students in 205 public secondary schools in Ekiti State. The sample consisted of 163 students in intact classes drawn from four public secondary schools in one senatorial district from the three senatorial districts in Ekiti State. The sample was selected using multistage sampling procedure. The instrument used for the study was Performance Test in Basic Science (PTBS). The face and content validity of the instrument was ensured using the judgement by experts of Tests and Measurement, Science Education and the researcher’s supervisor. The reliability of the instrument was established using Cronbach Alpha which yielded reliability co-efficient value of 0.73 for PTBS. The data collected for this study were analysed using descriptive and inferential statistics. The research questions were answered using means, standard deviation and bar chart. All Hypotheses were tested using t-test, Analysis of Variance (ANOVA) and Analysis of Covariance (ANCOVA). All hypotheses were tested at 0.05 level of significance. The findings of the study showed that the two groups (Team Teaching and Conventional) were homogenous at the commencement of the experiment. The use of Team Teaching Strategy enhanced better performance of students in Basic Science than the conventional method. It was also recommended that the Ministry of Education should offer professional training and re-training to Basic Science teachers through workshops and seminars to enhance their skills in team teaching and collaborative pedagogical practices.

Keywords: Team Teaching, Basic Science, Students’ Performance,

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