Musuluve Mimo Lilian and Dr. Ronald Werunga Kikechi 2020. Influence of Instructional Materials Usage on Academic Performance in Secondary Schools in Webuye West Sub-County, Bungoma County. IJRDO- Journal of Educational Research. 5, 11 (Dec. 2020), 49-59. DOI:https://doi.org/10.53555/er.v5i11.4008.