Hijón Neira, R., M. Garcia-Iruela, and C. Connolly. “Developing and Assessing Computational Thinking in Secondary Education Using a TPACK Guided Scratch Visual Execution Environment”. International Journal of Computer Science Education in Schools, Vol. 4, no. 4, May 2021, pp. 3-23, doi:10.21585/ijcses.v4i4.98.