Sand animation is a term which has two meanings. It is the name given to a style of live performance art, and also to a type of animation. In the former, an artist creates a series of images using sand, a process which is achieved by applying sand to a surface and then rendering images by drawing lines and figures in the sand with one's hands. To increase visibility and to add further artistic aesthetic, a sand animation performer will often use the aid of an overhead projector or lightboard. In the latter, animators move around sand on a backlighted or frontlighted piece of glass to create each frame for their animated films.