Parents will more than likely want to ensure that their child does not spend too much time on their tablet, whether this be for educational use or not. The nabi DreamTab comes with extensive time controls built into the parental controls.
Using the time controls, parents can set time limits for individual apps or groups of apps, rather than just limiting the time spent on the tablet in total. Parents can also set mandatory exercise times too.
Should a child spend more time using and learning with the educational apps, a parent can then reward them with more time on recreational apps and games.
The DreamTab also uses animations to tell children when time is up or they need to do something else, rather than simply switching off.