In this From the Top at Carnegie Hall video segment, 15-year-old violinist Caeli Smith plays a wonderful movement from Astor Piazzolla's L'histoire du tango, called Bordel 1900.

In this video segment from Nature, a veterinarian talks about the Florida manatee, an endangered species.

These 1963 flyers announce the speakers and issues for the March on Washington; from the Birmingham Civil Rights Institute.

In this From the Top at Carnegie Hall video segment, watch Jingchen Sun, a 17-year-old marimba player from China, as she plays a haunting piece by German composer and percussionist Nebojsa Zivkovic.

In this video from Wide Angle, 18-year-old Mohanned Abu Tayyoun discusses the reasons behind his decision to conduct a martyr operation.

This Wide Angle video features the Mass Games, a colossal spectacle of rhythmic gymnastics, which celebrate the North Korean state.

This video, adapted from material provided by the ECHO partners, portrays a dramatic telling of the story, Maui and the Creation of the Islands.

This video segment from New York Voices features Chinese American architect Maya Lin.

In this activity, students will focus on dividing fractions, starting with single-digit denominators and working up.

Melba Patillo Beals was one of nine black students who desegregated Little Rock's Central High School in 1957. In this interview, recorded for Eyes on the Prize, Beals describes her tumultuous experience.

Sylvia Mendez recalls the conditions that led Mexican Americans to sue for desegregation in the 1940s in this segment from Mendez vs. Westminster: Para Todos los Ninos/For All the Children, from KOCE-TV.

Migrant construction workers from rural China describe their living conditions in Beijing in this Wide Angle video segment.

Chinese migrant workers give insight into their status, lack of power and vulnerability in the new economic order in this video from Wide Angle.

In this oral history from the Birmingham Civil Rights Institute, Miriam McClendon recalls her arrest and jailing for participation in the Children's Crusade of 1963.

This Wide Angle video explores the effects of economic prosperity and secularization on family structure and beliefs in Ireland.

This Wide Angle video provides an introduction to the four personable female stars of Sweet Talk, a popular television show in the Arab world.

Scientists conduct an experiment to learn about moths' attraction to light in this video segment from WILD TV.

This video segment, adapted from NOVA, shows the racial violence sparked when the African American chemist Percy Julian and his family moved into an exclusive Chicago suburb in 1950.

In this From the Top at Carnegie Hall video segment, 17-year-old Eliodoro Vallecillo plays the Allegro from Mozart's Concerto No. 3 in E flat, K. 447 on the French horn.

In this video segment from Religion & Ethics Newsweekly, learn about how the events of 9/11 have posed continuing challenges for American Muslims as they work to build their community in the U.S.