Dig into the following
websites for more information on children
American Veterinary Medical Association (AVMA)
This website provides a rich and comprehensive section on children and pets, the importance of proper and livelong socialization of your pet, puppy development and responsible dog ownership. There is a Literature Review of Socialization which spells out the importance of the different periods in puppy development and how proper socialization helps a dog cope in every-day life with humans without using aggression. There are also podcasts on puppy classes, dog bite prevention, and why punishment of dogs is counterproductive.
Doggone Safe has excellent information, photographs and videos for kids, parents and dog owners, including dog body language and dog safety for kids.
Stop the 77
This website provides very child friendly information, including videos of situations that make dogs uncomfortable with children. Be sure to watch the video on the homepage showing how those "cute" pictures of dogs and kids actually show dog body language that is highly uncomfortable and may lead to bites.
American Society for the Prevention of Cruelty to Animals (ASPCA)
Has information on dog body language, safety tips for children, and recommendations for pet owners.
Humane Society of the United States (HSUS)
Provides tips on avoiding and preventing dog bites and how children can play safely with dogs.