Hassan، Y. S. (2016). The Effectiveness of a Hands on Summer STEM Program in Developing Middle School Students Design Thinking and Conceptual Understanding. المجلة المصرية للتربية العلمية، مج19, ع2 ، 141 - 194. مسترجع من http://search.mandumah.com/Record/761316
Hassan، Yasser Sayed. "The Effectiveness of a Hands On Summer STEM Program in Developing Middle School Students Design Thinking and Conceptual Understanding." المجلة المصرية للتربية العلمية مج19, ع2 (2016): 141 - 194. مسترجع من http://search.mandumah.com/Record/761316