The Anti-Defamation League and Facing History and Ourselves both have plenty of online resources for educators and provide ways of incorporating lessons about bias, stereotyping, and racism into the classroom. The ADL has lesson plans specific to age group for teachers of children K-12, including discussions of the words prejudice, bias, stereotype, and discrimination and what they mean. Facing History and Ourselves has guidelines and ideas for teaching books about subjects like the Holocaust, emphasizing the "sanctity of human life."
The good thing about this kind of education is that not only are kids exposed to ideas of equality, but the lessons also encourage students to think critically about things, consider more than one perspective, and see the causes and effects of events and ideas throughout history. This way of thinking is necessary when learning about anything, and help students later in life.
