Interactive Maths Games for Students
/Allanah has put together a great wiki of basic number facts that include downloadable pdfs and web sites to support learning basic facts in her class.
To download your year level just click on it and it should end up on your desktop. Allanah has promised she will add more links and levels in time.
It is a great resource and I highly recommend it for all primary / elementary teachers. Take a look at ithere.