Third graders explore WWII by analyzing technological advances. In this invention instructional activity, 3rd graders discuss the use of the Enigma machine which decoded private German messages that communicated with U-boats. Students...

Tenth graders organize information to explain how photosynthetic bacteria contributed to climatic changes that happened on Earth. Students create a timeline by using a storyboard to tell the story of the change.

Young scholars learn about the technological development of flight by organizing a presentation on the history of flight.

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 2-page handout provides short descriptions of the different aeons, eras, and periods in the Earth's geological history.

Earth's magnetic poles have reversed themselves throughout its long history. Find out what scientists know about these reversals. A geologic time line shows when the reversals occurred.

Smithsonian Education presents "Fossils: Footprints Across Time." Teachers can download this teaching package that introduces students to the study of fossils. Students will discover what fossils can teach us about the Earth as it was...