The CyberSquad must construct a clock of sorts in order to keep track of the amount of time they have to rescue Dr. Marbles in this video segment from Cyberchase.

In this video segment from Religion & Ethics Newsweekly, learn how Muslims in America celebrate Eid al-Fitr, the Ű_í_Ű__Ű_ŒŰ_ŒŒŰ‹_Feast of Breaking the Fast.Ű_í_Ű__Ű_ŒŰ_ŒŰ_í_Ű_Œ

Eileen Walbert was among the Concerned White Citizens of Alabama who took a stand for civil rights, as she describes in this oral history from the Birmingham Civil Rights Institute.

This video, adapted from NASA, presents rare experimental evidence from the Fermi Gamma-ray Space Telescope supporting Einstein's prediction that space-time is smooth.

Conviértete en un detective para resolver el Caso de la Mochila con Mal Olor! Actúa las pistas y saca conclusiones para resolver el misterio.

Cuando el detective Bentley no puede entender por qué su mochila huele mal, recorre los acontecimientos de su día para encontrar pistas. Asumiendo el papel de detectives, los espectadores representan los eventos del día de Bentley y usan pistas textuales para resolver el caso.

Objetivo de Aprendizaje:
Sacar conclusiones de los hechos presentados en el texto y respaldar esas afirmaciones con evidencia textual.

¡Aprende sobre los logros de George Washington, Eleanor Roosevelt, el Dr. Martin Luther King Jr. y Dolores Huerta actuandolos!

Sawyer, un estudiante de la clase de historia, se imagina que presenta un programa de entrevistas con los invitados George Washington, Eleanor Roosevelt, el Dr. Martin Luther King Jr. y Dolores Huerta. Cuando Sawyer entrevista a estas figuras históricas sobre sus logros, los espectadores actúan frases que representan cada uno de sus legados.

Objetivo de Aprendizaje:
Identificar las contribuciones de las figuras históricas George Washington, Eleanor Roosevelt, el Dr. Martin Luther King Jr. y Dolores Huerta.

Students model, build, and draw diagrams of electric circuits and test the conductivity of a variety of materials.

In this animation produced by WGBH and Digizyme, Inc., see how molecules of DNA are separated using gel electrophoresis, and how this process enables scientists to compare the molecular variations of two or more DNA samples.

This resource from the AMERICAN EXPERIENCE Web site, which contains both an interactive activity and illustrated text, looks at the composition of different types of steel and their impact on technology.

Scientists discuss whether or not endocrine disrupting chemicals, which may cause birth defects and other health concerns, should be controlled in the absence of conclusive proof, in this video segment adapted from FRONTLINE: Fooling with Nature.

Watch students as they conduct an energy audit on a home and gain hands-on experience for a career in the green energy industry, in this video adapted from ATETV.

This feature, adapted from Interactive NOVA: "Earth," follows the path of energy as it is transferred via the food chain from one type of organism to another.

This video segment, adapted from NOVA, describes the energy flow in a coral reef, including its food web.

In this lesson designed to enhance literacy skills, students examine energy forms in moving objects and discover how changes from one form to another move cars through a roller coaster ride.

On NOVA, a team of carpenters, timber framers, engineers, and historians recreate a medieval throwing machine called a trebuchet. This adapted video segment explores how understanding energy transfer informs their design.

See potential energy convert to kinetic energy in this interactive activity from WGBH that shows a roller coaster in action.

In this video segment from NASA, robotics researcher Ayanna Howard uses engineering to improve the intelligence of robots in space exploration.

In this video segment adapted from NOVA scienceNOW, learn how what you eat, drink, or smoke may affect the instructions your epigenomes send to your genes, and as a result, change how your DNA is expressed.

Franklin works with Laverne to create a budget for a job painting a room, in this video segment from TV 411.

Harry estimates how long it will take him to get to the front of a long ticket line in this Cyberchase video segment.