Curated OER
Ya' Gotta Have Heart
Fourth graders study the parts of the human circulatory system and how they function. They design a flow chart of the circulatory system and use data to construct charts and graphs.
Untamed Science
Untamed Science: Biology: Human Biology: Circulatory System
Read and watch how the blood, the heart, and the blood vessels keep the blood flowing through our bodies. [6:00]