Following an opening segment on the importance of oxygen to the human body, this program studies the structure and function of the respiratory system. Topics include the anatomy of the upper respiratory tract, the lower respiratory tract, and the alveoli; the diffusion of gas molecules through the walls of the alveoli and capillaries, and the effect of high altitude on the diffusion process; and the mechanics of breathing via the bulk flow transport...

Many equate it with the Presidency, but the Executive branch of our government is far more complex than that. Containing departments and agencies that directly affect the health, safety, security, and prosperity of the American public, the Executive branch is an administrative mountain with the White House at its peak. This program expands on that description, familiarizing students with the most visible arm of U.S. leadership and its evolution through...

This collection of conversations, interviews, speeches, and book quotes provides insight into the thinking of philosopher and writer Joseph Campbell.

The classic collection of Dr. King's sermons that fuse his Christian teachings with his radical ideas of love and nonviolence as a means to combat hate and oppression.

The complete text with explanations and an easy translation to help you understand the play.

"Have you ever thought about what really happens when you flush a toilet? In this book, students will learn all about this quirky subject and the different parts of this simple machine. From the bowl, the tank, the handle, and stopper, students will learn about something we all do on a daily basis but don't really every think about. So, next time you flush, you'll know exactly what happens! This book will allow students to develop a simple sketch,...

Presents the original text of Shakespeare's play side by side with a modern version, with marginal notes and explanations and full descriptions of each character.