Imunya, Peter Thuranira, Gitonga Eric Mwenda, and Kaberia Isaac Kubai. 2018. “The Influence of Teacher Training on Participation in Co-Curricular Activities by Learners Who Are Mentally Challenged in Special Units in Tigania West Sub-County Meru County”. International Journal For Research In Educational Studies 4 (9):33-43. https://doi.org/10.53555/es.v4i9.746.