I think this is kinda cool for any newbies to the slope or anyone bring the kids away for the first time.
Previoulsy the option in Ireland was the outdoor dry artificial slope in Kilternan but now there is an indoor option. It works on a slighly different principle, this time the floor / carpet moves from underneath you, and you use gravity to move or fall down the slope.This “endless ski slope” covers an area of 50sqm and is constantly moving backwards. At the front is a mirror where you can look at yourself and concentrate on your technique. While in Kilternan it is an artifical slope, that has very little resistance.

The Ski Centre is located in Sandyford, Dublin and they offer lessons and rental of the slope for skiers and snowboarders. As far as we can see, you will be supervised by a qualified instructor at all times.
One of the benefits of such a system is that the is now downtime waiting for a drag lift to bring you back to the top of the piste. Classes which last an hour, have up to 6 pupils in them. The pupils, in two groups of 3 alternate on the slope, so to give people a rest during the hour long session.
There’s some videos of it here http://www.skicentre.ie/media-gallery/default.asp