they make actual devices for kids and i thi k they even make devices for kids age 10-14 too.Ive seen a couple of these devices about 6 months ago and they were pretty simplified and the child could only call people in the devices contacts list and emergency services.That way the child cant just call whoever they want the parent has to approve who the child can call by only allowing them to call the numbers/people in their devices contact list,and it was passord protected. It had a 2.0 MP camera,Speakerphone,and i even saw a couple with data,internet,connections.They were pretty simplified and not the best devices,as far as we want from our devices,but they were built pretty tough.Some of them looked like u could throw the them against the wall,pick it back up and make a call.

u could also try just a bare/stripped rom and add only the apps/programs u want.There are also GPS apps u can buy that allow u to track someone in real time,anytime.Maybe set the browser homepage to google and change settings to strict search settings.I cant think of much else now,but if i think of anything else ill post it.Goodluck.Ive never had anyone ask that question,good question too.