Al-Bhayrat, Raed. 2021. “The Effectiveness of Training Based on the Principles of the Theory of Trees for Solving Problems in Providing High School Students in Jordan With the Skills of Inventive Thinking”. Dirasat: Educational Sciences 48 (4):145-64. http://dsr.ju.edu.jo/djournals/index.php/Edu/article/view/2928.