The Nanae Snow Park is about an hour from Hakodate and is relative cheap to get to using the local trains. There is a shuttle bus that runs to and from Onumakoen station and the snow park. You can travel from Hakodate to Nanae and back for around 1060 yen.
This is a great place to work on the basics. The runs are varied enough for the beginner to take on a variety of conditions and gradients. And there are a