Augmented reality is defined as "an enhanced version of reality created by the use of technology to add digital information on an image of something."AR is used in apps for smartphones and tablets. AR apps use your phone's camera to show you a view of the real world in front of you, then put a layer of information, including text and/or images, on top of that view.
Virtual Reality is defined as "the use of computer technology to create a simulated environment." When you view VR, you are viewing a completely different reality than the one in front of you. Virtual reality may be artificial, such as an animated scene, or an actual place that has been photographed and included in a virtual reality app. With virtual reality, you can move around and look in every direction -- up, down, sideways and behind you, as if you were physically there. (source)
As it allows students to share their world with others by creating their own VR content and Promote curiosity and wonder, it is a really important tool and I recommend you to use it in your classroom.