In this lesson, students are required to work in teams to simulate the volume of blood moving through the circulatory system by transferring blliquid into-and through-a series of containers.

A very good site about the circulatory system of a bird. It is reader friendly, and includes a fair amount of information. Good diagram of the circulatory system.

This resource from Khan Academy provides information about hypertension, a circulatory system disease. Students will learn the basic facts about this disease.

Causes of heart failure, signs and characteristics of heart failure, pathologic conditions resulting in heart failure, and more are the topics addressed in this thorough resource.