I think this is a wonderful aid to whatever subject is being taught. It does not provide much depth instruction, however, it does get the students engaged and takes what they're learning closer to a real-world level.
How I Use It
I would use this as a tool in front of the class to show an instructional video pertaining to the subject at hand. I then put the students into small groups with one tablet that has the VR video on it so that they can further explore the subject. It would not have been ideal if every student had their own actual set of VR goggles because they are younger.