Obeidat, ‏​‏​‏​​‏​‏​​‏​‏​‏​‏​‏​‏ A.R. (2018) “The Effectiveness of a Learning Program on Creative Problem Solving Model (CPS) in Developing Mathematical Skills for 10th Grade Students”, Journal of Educational and Psychological Sciences, 2(26), pp. 31–17. doi:10.26389/AJSRP.E141018.