1. A method of educating a visually impaired student comprising: providing a sized model as a three-dimensional structural representation of an object and a reference guide coupled with the model that is configured to provide a reference orientation of the model, the model configured to fit inside a human mouth of the student for learning the structural representation of the object using oral senses of the student; allowing a visually-impaired student to insert the model into the student's mouth; and providing supplemental educational information relative to the model to guide the student in understanding the model while inserted in the student's mouth.