Nasambu , C. M., Mungai, J. G., & Otieno, M. . (2026). Influence of Authentic Tasks and Portfolio Assessment on Acquisition of Core Competencies Among Grade Six Learners in Public Primary Schools in Kiambu County, Kenya. Journal of Education, 6(4), 42–53. https://doi.org/10.70619/vol6iss4pp42-53-853