Either before or at the close of the evidence, any party may file written requests that the court instruct the jury on the law as set forth in the requests, and the court shall inform counsel of its proposed action upon the requests before it instructs the jury. The court shall instruct the jury before the arguments to the jury are begun, and the instructions given by the court, whether in the form of a connected charge or otherwise, shall be in writing and shall not comment upon the evidence; except that supplemental written instructions may be given later, after opportunity to object thereto has been accorded to the parties. The court may show the written instructions to the jury and permit the jury to take the written instructions to the jury room. No party may assign as error the giving or the refusal to give an instruction unless the party objects thereto before the arguments to the jury are begun, stating distinctly, as to any given instruction, the matter to which the party objects and the grounds of the party’s objection; but the court or any appellate court, may, in the interest of justice, notice plain error in the giving or refusal to give an instruction, whether or not it has been made the subject of objection. Opportunity shall be given to make objection to the giving or refusal to give an instruction out of the hearing of the jury.