The history of African Americans includes not only those of all Americans but also those against slavery and Jim Crow Laws and a struggle for Civil Rights. Time magazine's website, and Time for Kids, both have pages dedicated to Black History. You can learn about Jim Crow Laws from the National Park Service or about the Underground Railroad from National Geographic.
Many sites about Black History focus on the achievement of individuals. A good place to start is at the Biography Channel's Black History page. Time for Kids has a special section that highlights African Americans involved in the arts. Find a suitable book about an African American pioneer at Reading Rocket's Black History Month page. For young children, Nick Jr. has created coloring pages of influential African Americans.
Because of separation caused by law and custom, African Americans developed cultural ways unique to themselves, many of which have spread to influence the entire country. African American World provides a solid introduction to the topics of African American Culture and Society. You can learn about slavery at the Colonial Williamsburg website or jazz from Scholastic's site.
Teacher's guides for Black History provide frequently contain lesson plans, activities to help students meet national standards, and links to additional educational websites. These guides are invaluable to the teacher organizing her classroom plans or the father helping his son with a research assignment. PBS has put together activities for teachers and children to accompany their documentary "Africans in America." Other sites that include information for educators are Scholastic and the African Studies Center at the University of Pennsylvania.