Deryabina, N., & Deryabina, A. (2008). DEVELOPMENT OF CLASSIFICATION FOR CLOSED TEST TASKS. Problems of Education in the 21st Century , Problems of Education in the 21st Century , 6. presented at the May/2008. Retrieved from http://oaji.net/articles/2014/457-1392234190.pdf

Hoang, N. H., Nguyen, T. T. H., Pham, T. P. H., Ngo, T. P., & Nguyen, T. T. (2023). THE DEVELOPMENT OF CURRICULAR AND TRAINING PROGRAMS IN VIETNAM . Problems of Education in the 21st Century, Problems of Education in the 21st Century, 81(1), Continuous. presented at the February/2023. doi:https://doi.org/10.33225/pec/23.81.90

Gomez, J. C. (2020). DEVELOPMENT OF EFL TEACHERS´ PEDAGOGICAL CONTENT KNOWLEDGE THROUGH ACTION RESEARCH IN A MASTER’S PROGRAM. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 78(4), Continuous. presented at the August/2020. doi:https://doi.org/10.33225/pec/20.78.533

Tammemäe, T. (2009). THE DEVELOPMENT OF SPEECH OF ESTONIAN CHILDREN AGED 2-3 YEARS AND IT`S RELATIONS WITH THE FACTORS OF THE HOME ENVIRONMENT. Problems of Education in the 21st Century , Problems of Education in the 21st Century , 10. presented at the January/2009. Retrieved from http://oaji.net/articles/2014/457-1392315585.pdf

Retnawati, H., & Wulandari, N. F. (2019). THE DEVELOPMENT OF STUDENTS’ MATHEMATICAL LITERACY PROFICIENCY. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 77(4), Continuous. presented at the August/2019. doi:https://doi.org/10.33225/pec/19.77.502

Chroustová, K., Bílek, M., & Šorgo, A. (2015). DEVELOPMENT OF THE RESEARCH TOOL TO IDENTIFY FACTORS AFFECTING THE USE OF CHEMISTRY EDUCATIONAL SOFTWARE. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 68, Discontinuous. presented at the December/2015. doi:https://doi.org/10.33225/pec/15.68.06

Sobrado, L. M., Ceinos, C., & García, R. (2011). DIAGNOSTIC OF INFORMATION AND COMMUNICATION TECHNOLOGIES’ USE IN VOCATIONAL GUIDANCE: ANALYSIS OF AN EXPERIENCE. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 35. presented at the November/2011. Retrieved from http://journals.indexcopernicus.com/abstract.php?icid=968809

Malceva-Zamkovaja, N., Müürsepp, M., & Muldma, M. (2012). DIALOG OF CULTURES IN TEXTBOOKS OF PRIMARY SCHOOL: COMPARATIVE ANALYSIS. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 44. presented at the July/2012. doi:https://doi.org/10.33225/pec/12.44.113

Gavrilina, M., & Filina, O. (2013). DIALOGUE WITH THE TEXT ON THE LESSONS IN RUSSIAN LANGUAGE AND LITERATURE IN THE DIASPORA. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 52. presented at the March/2013. doi:https://doi.org/10.33225/pec/13.52.137

Ochieng, P. A. (2009). DICHOTOMY BETWEEN EDUCATIONAL POLICY-MAKING AND IMPLEMENTATION IN KENYA. Problems of Education in the 21st Century , Problems of Education in the 21st Century , 12. presented at the May/2009. Retrieved from http://oaji.net/articles/2017/457-1505492484.pdf

Filina, O. (2008). DIDACTIC MATERIALS FOR STUDENTS AS MEANING OF EDUCATIONAL QUALITY IMPROVEMENT. Problems of Education in the 21st Century , Problems of Education in the 21st Century , 7. presented at the June/2008. Retrieved from http://oaji.net/articles/2014/457-1392236443.pdf

Gerlič, I. (2009). DIDACTICS AND COMMUNICATIONS CRITERION OF DISTANCE EDUCATION. Problems of Education in the 21st Century , Problems of Education in the 21st Century , 14. presented at the October/2009. Retrieved from http://oaji.net/articles/2014/457-1393668577.pdf

Holmqvist, M., Björkman, K., & Ohlin, M. (2010). DIFFERENCES BETWEEN LEARNING FACTS AND COMPLEX PHENOMENA: A LEARNING STUDY IN HISTORY BASED ON VARIATION THEORY. Problems of Education in the 21st Century , Problems of Education in the 21st Century , 20. presented at the April/2010. Retrieved from http://oaji.net/articles/2014/457-1400134342.pdf

Soen, D. (2013). DIFFERENCES IN ATTITUDES TOWARDS HIGHER EDUCATION AMONG HIGH SCHOOL STUDENTS: THE CASE OF SABRAS (ISRAELI-BORN) AND FSU IMMIGRANTS IN ISRAEL. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 53. presented at the April/2013. doi:https://doi.org/10.33225/pec/13.53.120

Rogošić, S., & Baranović, B. (2018). DIFFERENCES IN SOCIAL BACKGROUND, STUDY CHOICE MOTIVATION AND HIGHER EDUCATION EXPERIENCE BETWEEN PRE-SERVICE CLASS TEACHERS AND PRE-SERVICE SUBJECT TEACHERS. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 76(5), Continuous. presented at the October/2018. doi:https://doi.org/10.33225/pec/18.76.706

Bussotti, P. (2015). DIFFERENTIAL CALCULUS: THE USE OF NEWTON’S METHODUS FLUXIONUM ET SERIERUM INFINITARUM IN AN EDUCATION CONTEXT. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 65, Discontinuous. presented at the June/2015. doi:https://doi.org/10.33225/pec/15.65.39

Thurler, M. G., & Maulini, O. (2012). THE DIFFICULTIES OF BUILDING UP A NEW PARADIGM OF WORKING ORGANIZATION IN SCHOOLS. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 48. presented at the November/2012. doi:https://doi.org/10.33225/pec/12.48.34

Hadi, S., Retnawati, H., Munadi, S., Apino, E., & Wulandari, N. F. (2018). THE DIFFICULTIES OF HIGH SCHOOL STUDENTS IN SOLVING HIGHER-ORDER THINKING SKILLS PROBLEMS. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 76(4), Continuous. presented at the August/2018. doi:https://doi.org/10.33225/pec/18.76.520

Lorenzo, M. G., Reverdito, A. M., Blanco, M., & Salerno, A. (2012). DIFFICULTIES OF UNDERGRADUATE STUDENTS IN THE ORGANIC CHEMISTRY LABORATORY. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 42. presented at the May/2012. doi:https://doi.org/10.33225/pec/12.42.74

Lu, H., Fu, K., Liu, X., & Hu, W. (2023). DIGITAL CITIZEN PARTICIPATION OF COLLEGE STUDENTS: REALITY AND OPTIMIZATION PATH. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 81(2), Continuous. presented at the April/2023. doi:https://doi.org/10.33225/pec/23.81.244

Lobzhanidze, S., Urchukhishvili, G., & Sikharulidze, M. (2023). DIGITAL CITIZENSHIP IN GEORGIA’S TEACHERS, STUDENTS AND PARENTS. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 81(5), Continuous. presented at the October/2023. doi:https://doi.org/10.33225/pec/23.81.667

Karakuş, İ., & Kılıç, F. (2022). ‘DIGITAL’ OVERVIEW AT THE PROFILES OF PRE-SERVICE TEACHERS: DIGITAL AWARENESS, COMPETENCE AND FLUENCY . Problems of Education in the 21st Century, Problems of Education in the 21st Century, 80(2), Continuous. presented at the April/2022. doi:https://doi.org/10.33225/pec/22.80.324

Lamanauskas, V., Šlekienė, V., Bilbokaitė, R., & Ragulienė, L. (2012). DIGITAL TEACHING AND LEARNING CONTENT IN NATURAL SCIENCE EDUCATION: A CASE STUDY. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 50. presented at the December/2012. doi:https://doi.org/10.33225/pec/12.50.46

Lamanauskas, V., Šlekienė, V., Ragulienė, L., & Bilbokaitė, R. (2011). DIGITAL TEACHING AND LEARNING CONTENT IN NATURAL SCIENCE EDUCATION: EDUCATIONAL USEFULNESS EVALUATION. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 37. presented at the December/2011. doi:https://doi.org/10.33225/pec/11.37.70

Bureš, V., Ponce, D., & Čech, P. (2008). DIGITALIZATION OF EUROPE: A NEW CHALLENGE FOR EDUCATION. Problems of Education in the 21st Century , Problems of Education in the 21st Century , 5. presented at the April/2008. Retrieved from http://oaji.net/articles/2014/457-1392223740.pdf