Here's a topic classes can really dig—the fossil record. Use the well-organized and thoughtful road map to take eighth graders back in time to unearth the answer. Learn how our climate has changed, and how organisms have...

One of the most diverse environments on Earth is the ocean. Young scientists explore the living things found in the ocean during an exciting seven-lesson unit. Their study includes organisms from plankton to invertebrates...

[Free Registration/Login may be required to access all resource tools.] Describes relationship between evolution and the geologic time scale.

[Free Registration/Login may be required to access all resource tools.] Explains how natural selection favors certain traits in a population so that the organism adapts to its environment, and that changes in the genes over time cause...

Overview of the basic concepts behind evolution, such as gene variation and adaptations.[Free Registration/Login may be required to access all resource tools.]

[Free Registration/Login may be required to access all resource tools.] The briefest overview of human evolution.

[Free Registration/Login may be required to access all resource tools.] The briefest overview of human evolution.

[Free Registration/Login may be required to access all resource tools.] The evolution of eukaryotic cells and multicellular organisms.

[Free Registration/Login may be required to access all resource tools.] The evolution of eukaryotic cells and multicellular organisms.

[Free Registration/Login may be required to access all resource tools.] Looks at the theories of evolution, plate tectonics, and global warming.

[Free Registration/Login may be required to access all resource tools.] Looks at the theories of evolution, plate tectonics, and global warming.

[Free Registration/Login may be required to access all resource tools.] For life to evolve from simple single-celled organisms to many millions of species of prokaryotic species to simple eukaryotic species to all the protists, fungi,...

[Free Registration/Login may be required to access all resource tools.] Examines theories and laws in science.

[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...

In this amazing online tutorial you will learn about how water, mass wasting, weathering, and erosion have help shape the landforms on Earth. The lesson includes many helpful interactive materials to prepare help you understand landscape...