Effectiveness of Science Technology Engineering and Mathematics (STEM) Programme in Improving Chemistry Academic Achievement of Students in Public Extra-County Secondary Schools in the North-Rift Region, Kenya. East African Journal of Educational, Social Science and Humanities Research , [S. l.], v. 4, n. 1, 2024. Disponível em: https://eajournalesshresearch.org/index.php/ojs-files/article/view/22.. Acesso em: 16 oct. 2024.