Demonstrative Evidence is basically any investigative aid or visual props that may be utilized in court; normally, to help visually explain the case at hand. These may include 3D models, crime scene illustrations, trial displays, or forensic animations/re-enactments. The displays may be hand drawn, or computer generated.

A well designed and laid out courtroom display will add a degree of professionalism when presented to the jury. Words can be just words when a witness is testifying; however, when those words are backed by a visual aid, the case will become much clearer to the jury.