Nebert Kevogo1, William W. Toili 2, and Stanley N. Mutsotso3
1Department of Curriculum and Instruction, Masinde Muliro University of Science and Technology, P.O Box 190-50100, Kakamega, Kenya.
2Department of Science and Mathematics Education, Masinde Muliro University of Science and Technology, P.O Box 190-50100, Kakamega, Kenya.
3Department of Curriculum and Instruction, Kibabii University College, P. O. Box 1699-50200, Bungoma, Kenya
*Correspondingauthor.Email:nebert_kevogo@yahoo.com
