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Gorghiu, G., Pribeanu, C., Lamanauskas, V., & Slekiene, V. (2020). USEFULNESS OF MOBILE TEACHING AND LEARNING AS PERCEIVED BY ROMANIAN AND LITHUANIAN SCIENCE TEACHERS. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 78(5), Continuous. presented at the October/2020. doi:https://doi.org/10.33225/pec/20.78.719

Artashkina, T. (2009). USING ACTIVITY APPROACH IN HIGHER EDUCATION. Problems of Education in the 21st Century , Problems of Education in the 21st Century , 13. presented at the June/2009. Retrieved from http://oaji.net/articles/2014/457-1393666593.pdf

Sikošek, D., & Žuželj, M. (2013). USING CHEMICAL MODELS FOR DEVELOPING NATURAL SCIENCE COMPETENCES IN TEACHING CHEMISTRY: FROM PUPILS AS MODEL ASSEMBLERS TO PUPILS AS CREATORS OF SELF-MADE MODELS. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 53. presented at the April/2013. Retrieved from http://journals.indexcopernicus.com/abstract.php?icid=1046370

Pribeanu, C. (2012). USING FORMATIVE MEASUREMENT MODELS TO EVALUATE THE EDUCATIONAL AND MOTIVATIONAL VALUE OF AN AR-BASED APPLICATION. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 50. presented at the December/2012. Retrieved from http://journals.indexcopernicus.com/abstract.php?icid=1025558

Hrbáček, J. (2009). USING MYIMLE SYSTEM FOR INTERACTIVE WHITEBOARDS IN EDUCATION. Problems of Education in the 21st Century , Problems of Education in the 21st Century , 16. presented at the November/2009. Retrieved from http://oaji.net/articles/2014/457-1396707254.pdf

Vainio, K. - L., & Raus, R. (2014). USING SELECTED PERSONALITY VARIABLES IN A LEARNING PROCESS FOR HOLISTIC EDUCATION: A CASE OF A VOICE TRAINING COURSE PARTICIPANTS. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 60, Discontinuous. presented at the July/2014. Retrieved from http://journals.indexcopernicus.com/abstract.php?icid=1114562

Silva, M. J., Lopes, J. B., & Silva, A. A. (2013). USING SENSES AND SENSORS IN THE ENVIRONMENT TO DEVELOP ABSTRACT THINKING – A THEORETICAL AND INSTRUMENTAL FRAMEWORK. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 53. presented at the April/2013. Retrieved from http://journals.indexcopernicus.com/abstract.php?icid=1046371

da Breganha, M. G., da Lopes, B. S., & Costa, N. (2018). USING STUDENTS’ VOICE TOWARDS QUALITY IMPROVEMENT OF ANGOLAN SECONDARY PHYSIC CLASSES. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 76(3), Continuous. presented at the June/2018. doi:https://doi.org/10.33225/pec/18.76.289

Davidovitch, N., & Druckman, E. (2017). UTILIZATION OF LEISURE TIME AND ACADEMIC CAREERS: A MULTIDISCIPLINARY GENDER PERSPECTIVE. Problems of Education in the 21st Century, Problems of Education in the 21st Century, 75(5), Continuous. presented at the October/2017. Retrieved from http://oaji.net/articles/2017/457-1509895498.pdf