Let's start with a number of apples that can easily be divide for six children: 3. Cut each of those 3 apples in half and give one piece to each of the 6 kids. With the two apples that are left, cut each of them into three pieces, and give each child one of those six pieces. Voila!
5 apples times 3 (the 3 equal parts) = 15
15/6 = 2.5
so if the apples can only be cut in thirds, then no.
but otherwise yes. hope it helps :)