Rich, Peter Jacob, Brian Jones, Olga Belikov, Emily Yoshikawa, and McKay Perkins. “Computing and Engineering in Elementary School: The Effect of Year-Long Training on Elementary Teacher Self-Efficacy and Beliefs About Teaching Computing and Engineering”. International Journal of Computer Science Education in Schools 1, no. 1 (January 11, 2017): 1 - 20. Accessed October 1, 2020. https://ijcses.org/index.php/ijcses/article/view/6.