A digital diagram from Digital Frog of the circulatory system of a frog. Very nice, and very fake since it is not a real frog.

This feature from the NOVA: "Cut to the Heart" highlights facts about the heart, including its size and placement, and will help you to understand the importance of this wondrous organ in our bodies.

This page from the Federal Reserve Bank of San Francisco provides information in the following categories: Inside the FRBSF, Economic Research, Financial Services, Economics Education, Community Affairs, Banking and Finance in the West,...

Article on arrhythmias with information about the heart's pacemaker.

A very good description of the blood and circulatory systems of mammals and the important role that blood plays in the physiology of animals.

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.

Understand the basic characteristics of circulation in the Chesapeake Bay, by allowing students to change the wind speed and velocity, and the freshwater forcing through a number of subestuaries, and observe the resulting surface height,...

The circulatory system transports substances between the exchange surface and cells. It delivers oxygen and glucose to the tissues for respiration, which is the release of energy to cells.

This unit invites students to learn about the history of slavery at select schools in the United States and how these schools taught the "science" of racial inferiority. The goal is for students to work in collaborative groups to produce...

A concise history of the study of the heart and its anatomy. Includes color pictures and details about the work of Galen, William Harvey, and others.

This site features a detailed index of photographs for cardiovascular pathology. You can see what a normal human heart looks like and what a sick one looks like too. Come and check it out.

A model organizes what we think we know about something in order to predict how it might behave in the present, future, or past as well as how it might respond to external influence. Models are especially useful when direct, controlled...

In this lesson students will use water balloons to simulate the effects of gravity and microgravity on fluid distribution in the body.

An introduction to the different regions of the heart, along with a description of the hearts function. A good overview site.

A good quick look at the comparative anatomy of the heart of a typical bird and the human heart. Gives some of the facts behind the differences.

A collection of resources - interactive activities and teacher tutorials - on the impact the ocean has on weather and climate.

Color-coded image of ocean currents depicts directional flow and speed of the currents across the globe.

Students learn the overall function of the human lungs, and then summarize the blood flow pattern associated with the lungs.

This is the eighth lesson in a series of learning modules on the topic of climate change. It explores the role that oceans play in global climate change. Includes comprehension questions and interactive tools for understanding the...

See how the human heart moves blood through the body in this animated feature from the NOVA: "Cut to the Heart" Web site.

The climate of our planet is greatly affected by Earth's oceans. Learn here about the different oceanic currents and the role those currents play on climate.

[Free Registration/Login may be required to access all resource tools.] Looks at how heat is transferred in the atmosphere.

This concise PBS NOVA site contains interesting facts about the heart and how it works.

[Free Registration/Login may be required to access all resource tools.] How Earth's atmosphere and oceans formed.