Learners observe real fossils. In this science lesson, students make their own mud fossils by pressing material into the mud and letting it dry in the sun for 3-4 days. Learners then get the fossils out displaying their mud...

Learners create an imaginary bird. For this anatomy lesson, students analyze how artists represent birds historically, then determine the anatomical aspects that suit a bird to its habitat. Using this information, learners create an...

In this Soviet Union worksheet, students read a 2-page selection about scientific work in the country and then respond to 4 short answer questions based on the selection.

Learners use a science journal to log plants that are native to Alabama. In this plant lesson plan, students identify characteristics, describe environments, and classify the plants that they find.

[Free Registration/Login may be required to access all resource tools.] Students will explore ways to study the past to learn about the history of life. Understand how fossils, DNA analysis, and molecular clock help researchers study...

Learn about the scientific hypotheses of the origin of life on Earth. [5:55]

Access any one of thirty-six lectures from a biological sciences course, in audio, video, and text format. Coverage includes evolution, natural selection, the fossil record, the history of life on Earth, ecological communities,...

Explore evolution with this interactive Tree of Life. Click on any species along the timeline to learn more about it. The timeline is accompanied by a video and the user can switch back and forth between them at any point.

Learn about the Earth's evolutionary history during the Cambrian period. [3:25]

This in-depth article illustrates the concept of geologic time, and helps the learner understand why fossils are rare.

What is evolution? This thorough site provides the basics of evolution focusing on the history of life, processes of evolution, microevolution, macroevolution, and more.

Find out how Dr. Carl Woese used RNA to develop the tree of life.

Thorough reference tool explores the mollusk with a description, pictures, and maps. Includes facts on ecology, history, behavior, evolution, conservation, and external links. The mollusk image is no longer available.

See how scientists use cladistics to study evolutionary relationships.

[Free Registration/Login may be required to access all resource tools.] Patterns of biological evolution during the Paleozoic Era.

[Free Registration/Login may be required to access all resource tools.] Patterns of biological evolution during the Paleozoic Era.

Learn about the first form of life on Earth, the cell.

Visit the virtual exhibits at this site to learn more about paleontology, the history of the earth, and life on earth. Use the information on this site to understand geology, geologic time, evolution, and phylogeny.

The history of human evolution is described, from the first aquatic animals that developed the ability to walk on land and the pivotal organisms from then up to the present day. The author then goes on to make interesting predictions...

This comprehensive study guide covers the main terms and concepts needed for a unit on the origin of life.

This online exhibit from the Natural History Museum weaves together seven subtopics dealing with human origin and evolution. The topics range from Pildown man and ancient humans to modern humans and chimp research.

Explore life's evolutionary history on the planet through molecular illustrations and animations. Pictorial evidence is based on origin of life research and theory.

An activity for students to explore an infograph to compare the similarities and differences between human and other species.

This timeline is a good resource if you are looking for brief descriptions of the geologic periods. Descriptions include pictures of common organisms for each period and the range of time covered by each period.