An excerpt from "Darwinism: an Exposition of the Theory of Natural Selection with some of its Applications", by Alfred Wallace. He was a contemporary of Darwin who is credited as the co-developer of the theory of natural selection.

The American Geological Institute has done an excellent job of defining and explaining evolution in this online booklet. Darwin, fossils, natural selection, and change over time are some of the concepts that are covered. Make sure to see...

An article reviewing over the life of Charles Darwin and his evidence of evolution. Find out how this young naturalist who took a trip around the world collecting evidence about how organisms have changed over time.

Outlines the events of Charles Darwin's own evolution into a scientist and how he developed his Theory of Evolution. Also discusses the immense resistance to his ideas that he faced from all fronts. Even today, many people refuse to...

Students will be able to identify important ideas Darwin developed during the voyage of the Beagle, and give examples of his observations that supported those ideas.

Concise description of embryology as evidence for evolution, as used by Darwin.

This slideshow provides a brief overview of Charles Darwin and his theory of evolution, natural selection and survival of the fittest.

[Free Registration/Login may be required to access all resource tools.] Do you ever wonder why some birds are big like ostriches and some birds are small like robins? Or why a lion has a mane while a leopard has spots? In the 19th...

Discover how Charles Darwin developed the theory of evolution through his observations in the Galapagos Islands.

[Free Registration/Login may be required to access all resource tools.] This study guide looks at Darwin's theory of evolution and natural selection. It also looks at some of the evidence supporting the theory of evolution (comparative...

[Free Registration/Login may be required to access all resource tools.] Covers Darwin's theory of evolution by natural selection.

[Free Registration/Login may be required to access all resource tools.] When Darwin returned to England at the end of his voyage, he did not rush to announce his discoveries. He did not want to present any ideas unless he had strong...

Discusses Social Darwinism and the negative repercussions it had on society during the Gilded Age. Includes questions for students at end.

Herbert Spencer's article "Progress: It's Law and Cause" in which he discusses his theories of evolution prior to Darwin's publishing.

A strong, comprehensive look at the evolution of mammals. Includes factors such as changing geologic structure of the earth and the different types found on different continents.

Take this interactive, multiple-choice quiz over evolution, then review your score and any missed questions at the end.

Try this Evolution 101 quiz.

[Free Registration/Login Required] This passage discusses Charles Darwin and his theory of natural selection in evolution. This passage is a stand-alone curricular piece that reinforces essential reading skills and strategies and...

Explore this concise article detailing Charles Darwin's Theory of Evolution and follow with discussion questions.

In this biology activity, students will be investigating evolution by "competing" for food like Darwin's finches might have competed. Each student group is given a different type of "beak" to work with and there are also different kinds...

Try these five multiple-choice quiz questions about Charles Darwin's Theory of Natural Selection.

The main concepts in Charles Darwin's theory of evolution are described, how natural selection works, and the ongoing criticism of evolution from Creationists.

A concise biography of Darwin, including his travels and his published works. Includes links to online copies of selected publications, along with information on related subjects.

Darwin's theory of natural selection and his ideas about evolution are explained here.