Round here we called that a smoke, as it's a damn sight quicker than saying "front to back". At first, you'll end up almost swinging the back round, so the back wheel lands about 4ft from where your front wheel originally touched. At this stage in learning, it's pretty much a sidehop, as you'll find you take off quite sideways. Eventually, you'll be able to take off more straight on and be more accurate with it. The longer you wait on the front wheel, the more momentum you lose - so try and get the switch as fast as possible, and then it makes the straight on smoke a little easier. There is a big risk of hitting the down tube, so practice on pallets to minimise bike damage.