There is nothing wrong with showing them how to play the chord, however do not tell them that it is a D chord in Root Position. Since it has F# in the bass it is a D chord in First Inversion. This chord definately sounds cool ( and I prefer to use it most of the time over a basic root position D Major Chord ), however it's function can be and is different than that of a normal D Major chord in Root position.

Hope this helps. Peace.