Jury Instructions
A judge's directions to the jury before it begins deliberations regarding the factual questions it must answer and the legal rules that it must apply.
Additional Sources
Wikipedia
Jury instructions are the set of legal rules that jurors should follow when the jury is deciding a civil or criminal case. Jury instructions are given to the jury by the judge, who usually reads them aloud to the jury. They are often the subject of discussion by attorneys on both sides in the case and the judge in order to make sure their interests are represented and nothing prejudicial is said.
Under the American judicial system, juries are the trier of fact when they serve in a trial. In other words, it is their job to sort through disputed accounts presented in evidence. The judge decided questions of law, meaning he or she decides how the law applies to a given set of facts. The jury instructions provide something of a flow chart on what verdict jurors should deliver based on what they determine to be true. Put another way, "If you believe A (set of facts), you must find X (verdict). If you believe B (set of facts), you must find Y (verdict)."
Forty-eight states (Texas and West Virginia are the exceptions) have a basic set of instructions, usually called "pattern jury instructions", which provide the framework for the charge to the jury; sometimes, only names and circumstances have to be filled in for a particular case. Often they are much more complex, although certain elements frequently recur. For instance, if a criminal defendant chooses not to testify, the jury will be instructed not to draw any conclusions from that decision.



