The term 'graphics' is taken to mean all forms of drawing or illustration used to represent 2D or 3D objects using a wide variety of media and techniques.
See the WikiPedia entry on Graphical projection for descriptions on a wide range of terminology.
See Draw and Sketch a large collection of free drawing lesson videos
Develop free-hand graphics skills by practicing one of these starters at the beginning of each Design and Technology lesson
Graphics techniques and media are used to 'model' real situations and to make 'models' or prototypes of what may become real products, systems or environments.
Activities to help understanding of what is meant by perspective and to learn some of the basic construction techniques.