The sketchiest stuff your kid can learn on the Internet

You can learn to do many things on the Internet, from learning how to drive to how to make fireworks. (Common Sense Media/TNS)

Set a curious kid loose on the Internet, and you have a match made in learning heaven. Unfortunately, for every geometry lesson on Khan Academy there are step-by-step instructions for something not just age-inappropriate – but potentially illegal or dangerous. 

While browser settings and parental controls can help keep your kids on appropriate sites, it's nearly impossible to shield them from every risky thing. But most tweens and teens who look up how to make fireworks, for example, are not reckless enough to try it.