feeding question

Can someone tell me what to do? or how to go about encouraging my fish to
come to the surface to feed? Right now they wait for the "floating" pellets
to sink to the bottom before they'll eat.

I know, this is hardly a concern, generally, but my grandkids don't quite
understand why they won't come to the surface to eat like they've seen on
the tapes they saw. Is there a trick to teach them to come up? or is it just
they are too young. I've 4 goldfish (2" long) and 4 shubunkins (3-4" long).
They've been in my pond for maybe 2 weeks now.

Thanks,
carol