A webcast presents a way to dig deeper into the ecosystems from dinosaur eras based on data gathered from small fossils versus what big dinosaur bones may reveal. [36:40]

What makes a species likely to go extinct? What makes some species stick around longer than others? This webcast will investigate these questions. [31:30]

Online exhibit commemorates the discovery of the polio vaccine. Includes a timelined history of the disease, beginning with the first clinical description of polio by British physician Michael Underwood. Inquiries into the research to cure polio, historical photos, and animated activities for students also included.

A lesson on the system of currency used by the Akan people of Ghana and how it compares to systems used today.

The Smithsonian provides a guide that classrooms can use to explore the environment in their own backyard. For example, a second-grade class in Colorado interviewed people in their community to inquire about the state of the local environment. They found out that there was a problem with the exploding population of deer. This guide can be used to explore ways in which students can become actively involved in the local community and solve environmental issues.

This video is for teachers to explore how to help students apply ideas about matter consistently across many scientific disciplines. [8:37]

Students will compare and contrast different methods of attaining the everyday items they need. Using the Akan people of Africa as an example of bartering, students will understand three different ways of paying for goods. Discussion questions and an activity are included.

William Edmondson is profiled at this site in a format that begins with a biographical sketch of his life. His works are then listed by appearance in the museum's database. Each work is presented in thumbnail format with brief information including title of work and date of creation.

As part of the Smithsonian Art Museum's database of artists, this site provides biographical information on William Henry Johnson in addition to an extensive listing of his works as displayed at the museum.

Find information on the many women who became well known for their part in aviation history. Click on one of the drop down menus on the left to find a name, then click on the name to see a short description of the woman and her contribution to flight.

Learn about African kente cloth, including how it is made, when to wear it, and how to wear it. Accompanying interactive lets you can design your own kente.

Beautiful, well-done site from the Smithsonian on the Wright Brothers: Who were they and what was the importance of the era they ushered in? Their roots are traced back to the Great Migration. Classroom activities and interactive experiments accompany this wonderful site.

This very thorough site will fascinate those interested in forensic anthropology. You will learn what you can read from bones, how a face can be reconstructed from a skull, clues you can read from a burial, and about forensic cases both recent and centuries old. One section focusses on how lost African American graves in Chesapeake are being found and how the occupants are being identified.

Exhibit documents the life and work of early twentieth-century New York portrait photographer Zaida Ben-Yusuf, who broke with many of the conventions of portraiture and, thereby, attracted the attention of prominent artistic, literary, and theatrical figures of that time, all eager to have portraits made by her.

An online sample of maps, drawings and photographs of zoos from over 30 states and 40 countries.