Already have a TD account?

If you are already a Teachers' Domain user, sign in now to connect your Teachers' Domain and accounts.

Teachers' Domain sign-in name:

Organization:

Password:

Signing in now will connect your and Teachers' Domain accounts, so that in the future you will automatically be signed into Teachers' Domain when you come from .

Not yet registered?

First time here?

As a user, you may browse Teachers' Domain and view as many resources as you wish without registering.

However, for access to all fo the features of Teachers' Domain, we'll need a little more information. Learn More

You are now "Test Driving" Teachers' Domain

You may view up to 7 resources in this limited trial period.

You have 6 views remaining. Register now for unlimited free access and to download, share, and save resources. Learn More

You are now "Test Driving" Teachers' Domain

As a user, you may view as many resources as you like without registering.

About Registration:

Registering with Teachers' Domain is free and allows you to:

• View as many resources as you like
• Save, sort, and share resources using My Folders and My Groups
• Download resources to your desktop
• See standards correlations for your state

Thank you for "Test Driving" Teachers' Domain

You have viewed all seven resources permitted in this limited trial period. You may continue to browse the site, but to view, download, share, and save resources, you must register now. Registration is simple, safe, and free.

For more information:

Learn about our online Professional Development Courses, or review our Privacy Policy.

If you still have questions, please contact us.

Subtopic: History of Evolution

Change grade range

Resource	Grade Level	Media Type
The Advantage of Sex Why did sex evolve? The likely answers, in this essay for the Evolution Web site by science journalist Matt Ridley, may surprise you.	9-12	HTML Document
Animal Body Plans: Homeobox Genes The homeobox genes that define the basic body plan of mice and fruit flies are illustrated in this graphic from The Human Evolution Coloring Book by Adrienne Zihlman. The accompanying article describes how these genes act as "molecular architects" in all animal species.	9-12	PDF Document
The Common Genetic Code Paul Nurse describes his research that showed that humans share some genes with organisms as different from us as simple brewer's yeast. Footage from Secret of Life: "Immortal Thread."	9-12	QuickTime Video
Complex Relations In this text excerpted from chapter 3, "Struggle for Existence," of Charles Darwin's On the Origin of Species, Darwin draws on firsthand and historical information for his observations about evolution.	9-12	HTML Document
Darwin: Reluctant Rebel This video segment from Evolution: "Darwin's Dangerous Idea," together with interviews with Daniel Dennett and James Moore, depicts Darwin struggling with publicizing his revolutionary theory.	9-12	QuickTime Video
Darwin's Diary Delve into the private thoughts of a reluctant revolutionary in this Evolution Web feature.	9-12	Flash Interactive
Darwin's Letters: Collecting Evidence This group of letters is a sample of the extensive correspondence Darwin carried on with a wide group of friends and colleagues as he collected evidence to support his theory of evolution by natural selection. From Charles Darwin's Letters: A Selection 1825-1859.	9-12	HTML Document
Darwin's Letters to Lyell In this letter written to his friend and mentor Charles Lyell less than three weeks after the publication of On the Origin of Species, Darwin describes the reaction of the great anatomist Richard Owen to his theory. From Charles Darwin's Letters: A Selection 1825-1859.	9-12	HTML Document
Evolution Revolution From the Evolution Web site, explore the rise of a revolutionary idea and the controversies that surround it.	9-12	Flash Interactive
Evolving Ideas: Who Was Charles Darwin? This video from Evolution highlights Charles Darwin's personal struggle to bring to light his theory of evolution through natural selection.	9-12	QuickTime Video
Evolving Ideas: Why Does Evolution Matter Now? In this video from Evolution, an exploration of multi-drug resistant tuberculosis in the Russian prison system highlights one reason it is important to understand evolution.	9-12	QuickTime Video
Life's Grand Design Are nature's complex forms evidence of "intelligent design"? In this Evolution essay, biologist Kenneth Miller explains how the processes of evolution account for complex structures such as the human eye.	9-12	HTML Document
An Origin of Species In this Evolution Web feature, witness for yourself how a new species can evolve as you observe natural selection and adaptive radiation in action.	9-12	Flash Interactive
Transitional Tetrapod Fossil In this video segment from NOVA: "Judgment Day: Intelligent Design on Trial," learn about the discovery of a well-preserved transitional fossil and how such transitional fossils support the theory of evolution.	6-12	QuickTime Video
What Is a Theory? In these two audio interviews from NOVA Online, learn about the difference between the common understanding of the word "theory" and how science uses the term.	6-12	Flash Interactive