The Teacher Who Stepped Forward

They enter the room and our hero notices that the desks are arranged in a circular fashion with nothing but a small oval in the middle. His confusion passes as soon as class starts when a 3-dimensional holographic image displays lasts night's homework assignment and the outline for today. The remainder of the period is spent examining the lifelike, 3D image of a snake from the inside, out. As class ends and the students begin to leave you decide to...