Yoon, So Yoon, Heidi Diefes-Dux, and Johannes Strobel. “First-Year Effects Of An Engineering Professional Development Program On Elementary Teachers”. American Journal of Engineering Education (AJEE) 4, no. 1 (May 24, 2013): 67–84. Accessed July 18, 2024. https://clutejournals.com/index.php/AJEE/article/view/7859.