http://kidshealth.org/en/kids/heart.html EPIC! For kids book: The Amazing Circulatory System EPIC! For kids book: The Circulatory System EPIC! For kids book: The Heart (Video) -Also available in Spanish EPIC! For kids book: My Heart EPIC! For kids book: The Heart and Blood in your Body EPIC! For kids book: The Heart and Lungs EPIC! For kids book: Take a Closer Look at Your Heart PebbleGo: Go to Science- Life Sciences-Human- Circulatory System