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How To: Use electrophilic aromatic substitution in chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to use electrophilic aromatic substitution in chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Use Hess's law in physical chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, we learn how to use Hess's law. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Perform an impressive handstand press in gymnastics (for kids)

Show off your im-"press"-ive handstand moves with this pressed handstand. If you can't seem to perfect the handstand press, then these girls will show you how to do one like a professional gymnast. Learn how to pike up, straddle up and other ways of getting into a handstand. Knowing these handstand exercises can help you improve your balance and ability to do advanced gymnastics tricks.

How To: Care for your baby's first teeth

Now that your baby has grown his or her first teeth, it's important that you take good care of them. This video guide from Health Guru will help you to do just that. For details, and to get started better looking after your own baby's teeth, take a look.

How To: Get your child to stop wetting the bed

Everyone has wet the bed, we all do it as a child, but as a parent it can be a little frustrating if they continue to do it. But it is possible to stop it and be supportive in the process. In this video you will get some basic tips to help stop the bed wetting and keep them dry!