The goal of this presentation is to present two simple ray tracer acceleration techniques (Bounding Volumes and Spatial Subdivision) as implemented in an object oriented ray tracer. A brief review of some acceleration techniques is first presented. It is important to note that in this context an acceleration technique is any enhancement that improves on the execution time of an exhaustive ray tracer[1]. Exhaustive ray tracing involves testing every object in the world for intersection for every ray that is cast. The techniques presented in the next section improve on exhaustive ray tracing by reducing the number of objects that a given ray must be tested against. The reader is referred to [1],[2] or [3] for an introduction to ray tracing in general.