“The Real State of In-Service Teacher Training For Science Teachers at Secondary School from the Points of Views of Teachers Supervisor and Education Experts in Khartoum State: 2.2 THE CONCEPT OF PLANNING”. Social Science and Humanities Journal (SSHJ) 3, no. 05 (May 27, 2019): 1151–1163. Accessed November 23, 2024. https://sshjournal.com/index.php/sshj/article/view/379.