As a parent you may have reservations about letting your children spend time on the internet.
One way to allay your fears is to direct your kids to some of the sites selected by the American Library Association for their Great Websites for Kids page.
The sites listed are sorted into eight categories of interest: Animals, The Arts, History & Biography, Literature & Languages, Mathematics & Computers, Reference Desk, Sciences, and Social Sciences. There is an additional category specifically for adults, Sites for Parents, Caregivers, Teachers & Others. Being as the GWK is produced by ALA, it's not surprising that a majority of the sites are book-related--there's nothing wrong with that!
Before letting your kids loose on the computer, you may want to take a look at a 2012 title called The Healthy PC: Preventive Care, Home Remedies, and Green Computing by Guy Hart-Davis [004.16 HAR]. The publisher states, "This hands-on guide also explains how to protect your PC for free using Microsoft Security Essentials, use the Internet safely, and configure parental controls to protect your children both online and offline." Just released, it should provide the latest in internet safety protection.
Logo courtesy Great Websites for Kids.