This is a project where students pick a state, study its landforms and data about its geology, and produce a poster that outlines how the state's geography evolved over time. An example of such a poster is provided on a downloadable...

On this real-time site, the U.S. Geological Survey shares LANDSAT satellite images. The LANDSAT Program is managed by NASA and the U.S. Geological Survey.

This dinosaur site, containing eight different sections, includes topics such as: 101 crazy theories about dinosaur extinction, the pattern and timing of extinction, evidence for late cretaceous climatic change, gradual extinction and...

This is a lesson designed by a biology teacher. In it, students use maps and evidence of island age, molecular genetics, morphology, and distance apart to determine how the islands came to be occupied by different species of lizards. It...

Visit the magnificent Hopewell Rocks and view the famous Flowerpot Rocks. See time lapse photography of the tides of the Bay of Fundy at both low and high tide. Video length 2:07

Many of the interesting landmarks around the world are formed over time by natural processes familiar to us in our everyday lives. This still collage produced for Teachers' Domain features images of a variety of beautiful natural wonders.

An excellent overview of the Paleozoic Era. It also provides a chart where you can learn information regarding each of the time frames within the era.

Find out what the fossil record tells scientists about the geologic and biological history of the Earth.

A good brief review of The Cenozoic Era, which also includes links to more detailed information as well as a chart of its subdivisions.

Explore life on ancient Earth with this site! Students can walk with dinosaurs to see what Earth looked like or investigate Earth's history. The site includes articles, pictures, timelines, and lots more.

Seven hands-on lessons module where students learn about fossils. These inquiry-based investigations explore how fossils form, properties of fossils, comparing fossils, how they show the age of the Earth, and what paleontologists do.

This illustration from the Lunar and Planetary Laboratory shows the approximate sizes of the planets relative to each other. Note that the planets are not shown at appropriate distances from the Sun.

Observe the Nisqually Glacier at Mount Rainier in this video segment from NatureScene. [4:07]

Article reports on how the surface of the Earth changes over time. Includes a list of vocabulary words from the article.

A comprehensive timeline of events in the prehistory and history of Ohio. Hyperlinks to the multitude of specific articles about Ohio's history.

Instructional module focusing on the rock cycle. Discussion includes the concept of uniformitarianism and how earth materials change from one form to another. The site also includes an interactive practice quiz and links relating to the...

Overview of the Earth in the Jurassic Period told by photos, news, videos, and external links with emphasis on what grew then, what lived then, the causes of mass extinction, types of fossils, and what life was like in general.

Overview of the Earth in the Triassic Period as told by photos, news, and external links with an emphasis on what grew then, what lived then, the causes of mass extinction, types of fossils, and what life was like in general.

See what any spot on Earth looked like millions of years ago.

The Earth is 4.6 billion years old- but how can humans relate to a number so colossal, and where do we fit on the geologic timeline? Joshua Sneideman reminds us of our time and place in the universe. [3:45]

This resource provides detailed information on each of the periods within the Precambrian Era. It discusses what earth was like, what the first multiple cell organisms were like and when they appeared.

A virtual tour of a Silurian reef. Includes information on geologic principles, the geologic time scale, and the Silurian period. Explores Silurian reefs and reef organisms.

A good overview of the radiation within the class through geologic time.

The origins, evolution and diversification of dinosaurs through geologic time are described, as well as their portrayal in Hollywood movies. There is also information about how birds evolved from dinosaurs.