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Wästerlid, C. A. (2020). CONCEPTUAL SUBITIZING AND PRESCHOOL CLASS CHILDREN’S LEARNING OF THE PART-PART-WHOLE RELATIONS OF NUMBER. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 78(6), Continuous. presented at the December/2020. doi:https://doi.org/10.33225/pec/20.78.1038

Kao, F. - C., Li, W. - D., Hsien, H. - C., & Wang, C. - H. (2011). THE CHARACTERISTIC FREQUENCY BANDS ANALYSIS OF BRAIN WAVE DURING LEARNING. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 31, Discontinuous. presented at the July/2011. doi:https://doi.org/10.33225/pec/11.31.56

Mwanyumba Tweni, F., Wamocha, L., & Buhere, P. (2022). ACADEMIC OUTCOMES OF HOMESCHOOLED VERSUS CONVENTIONALLY SCHOOLED CHILDREN PURSUING THE ACCELERATED CHRISTIAN EDUCATION CURRICULUM IN KENYA. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 80(3), Continuous. presented at the June/2022. doi:https://doi.org/10.33225/pec/22.80.474