The study investigated the effects of the WhatsApp Group Learning Platform (WGLP) on Senior Secondary School (SSS) Students' Learning Outcomes in Science, Technology, and Mathematics (STM) in Ekiti State, Nigeria. The sample comprised 100 SS II students from two public secondary schools in Ekiti State who were randomly selected from their classrooms. A multistage sampling technique was used to pick the sample. Data were collected using a self-created questionnaire called Science, Technology, and Mathematics Performance Tests (STMPT). The instrument's reliability was determined using the test-retest approach, which provided reliability co-efficient of 0.86. Descriptive and inferential statistics were used to analyze the data. The study question was answered using mean and standard deviation, while all the hypotheses were tested using a t-test statistical analysis tool at 0.05 level of significance. The results revealed that before the treatment, there was no significant difference between the mean scores of students in Science, Technology, and Mathematics in the experimental and control groups. The results also demonstrated that the pre-test and post-test mean scores of students exposed to STM using the WhatsApp Group Learning Platform and those exposed to traditional methods differed significantly. Based on the findings, it was recommended that the WhatsApp Group Learning Platform should be used to improve students’ performance in STM.
Key words: Science, technology, mathematics, WhatsApp, learning platform, students.
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