The Computer and Internet Division of the College of Education for Pure Sciences/University of Karbala organized a training course entitled (Matlab Basics) delivered by (Dr. The objective of the course was to learn the basics of drawing trigonometric countries using the Matlab program. Where the first day dealt with: an explanation of the definitions of the main programs and interfaces. As for the second day: an explanation of the most important instructions used in drawing. And the third day: giving several examples of drawing triangular countries (2D and 3D).