If your looking to get the kids away from the X-box and get them exercising I would recommend the Skate Station in Ashton. They cater for children more than adults which is rare in the skating world. The staff are friendly and and adults can spectate free of charge or skate with their children if you want. It also has a small cafe for refreshments and at £4.00 plus £1.00 for skate hire is great value for money. Safety gear like pads and helmets are free of charge.