absolutely! I have taught DD how to ring 000, her Daddy from my mobile, and she can call her Grandparents.

If you google tripple zero hero you will find a GREAT website for teaching kids about calling 000.

If you go to the Royal Show, they usually have a booth with the Emergency Services where kids can practice calling 000 a well. They have a person sitting opposite them so it really does mimic calling 000. And they are GREAT with kids!