Keraro, Fred N.,Wambugu, Patriciah W.2025-08-292025-08-292020-01DOI: • 10.15640/jehd.v9n1a12http://41.89.96.81:4000/handle/123456789/3231enIntegrating TESSA Science OERs in the Secondary SchoolCurriculum in Kenya for Effective PedagogyArticle