Curated OER
How Does Blood Circulate?
Fifth graders investigate the path of their blood through their heart and body. In this heart lesson, 5th graders recognize that blood travels in one direction through arteries and one through veins. Students complete worksheet about...
BBC
Bbc: Gcse Bitesize: Cardiovascular System
A great overview of the Cardiovascular System, its structure and functions. See diagrams of the heart, and learn how the blood flows through the heart.