If you want your kids to learn the importance of finishing tasks on time, then a new development on the internet that would help you achieve this is the Kids Reward Programme. A lot of kids based websites have launched this programme wherein you can set up your own tasks on a Kids Wall Chart which displays these tasks. The kids are then supposed to finish these tasks in the stipulated time mentioned by you and they get bonus and minus points accordingly. Once their points reach a certain level, the kid gets a reward which was earlier decided upon by the kid and the parent.
Giving such incentives to kids is a new way of making them do tasks and it has been quite successful as well.