An apple a day, keeps the doctor away.
So apple is good for every one in every season. for children, during the snacks time (especially in schools), it is advisable and healthy to eat vegetables or fruits rather than packed chips or kurkure like stuff.
If you give them an apple in pieces the color will change to brown due to oxidation. So what to do for that? It is simple.
Put the apple pieces in water mixed with some little amount salt.
After five minutes, you could pack that apple pieces in small snack box for your little ones. They will definitely enjoy it.