Isaac is very into cutting things right now. Mostly paper with scissors, but lately he's been wanting to cut with a knife at dinner. Our solution to help him learn how to cut with a knife without cutting himself, the table, or meeting frustration has been bananas.
Given half of a banana Isaac will meticulously cut it into at least 20 pieces before eating them. I must say that in the few weeks that he has been doing this his cutting has gotten better and we're no longer seeing banana pieces fly all over the kitchen! :)