This video from Religion & Ethics Newsweekly features Timbuktu, one of the most remote and inaccessible places on the planet and a former thriving center of Islamic learning.

This TV 411 segment features a lesson from Question Man on how to informally calculate 15% tips at restaurants.

Explore how masculinity is portrayed in a modern stylized version of Shakespeare's iconic play in this video from Great Performances: Romeo and Juliet. What does it mean to be a "man?" How is our understanding of masculinity reflected in the interplay of Shakespeare's words and the way in which this production interprets the text? Support materials ask students to analyze the fight scene in Act I of the play and whether Romeo accepts or rejects the ideas about masculinity introduced in that opening scene.

This graphic from Biology by Kenneth R. Miller and Joseph Levine suggests how some recent hominid fossil finds might fit into the overall picture of hominid evolution. As more fossils are found and further analysis advances our understanding of human evolution, this picture will almost certainly be revised.

This animation produced by WGBH and Digizyme, Inc. demonstrates the experimental technique used to introduce DNA plasmids inside bacterial cells, a process called bacterial transformation.

John Noble Wilford, a New York Times science writer, outlines various hypotheses on the origin of bipedalism.

In this video segment adapted from NASA, learn how engineers are transforming the future of flight by designing airplanes based on principles found in nature. In the early 1900s, the Wright Brothers found inspiration for their first airplane in nature. Their "Flyer," which was modeled on a bird's flexible wing design, was steered and stabilized by pulleys and cables that twisted the wingtips. Despite its success, this control strategy quickly vanished from aviation. Instead, stiff wings capable of withstanding the greater forces associated with increased aircraft weights and flying speeds became the standard. In this video segment adapted from NASA, learn how designs found in nature have inspired today's aerospace engineers as they conceive the next-generation of flying machines. Grades 3-12.

In this video segment from NOVA: Judgment Day: Intelligent Design on Trial, learn about the discovery of a well-preserved transitional fossil and how such transitional fossils support the theory of evolution.

In this video segment from Cyberchase, the CyberSquad tries to reach Ms. Fileshare by using a 3 x 3 matrix to figure out the various ways they can travel to her.

Watch the ZOOM cast build a chair out of newspaper by making good use of the strength of triangles.

In this video segment adapted from ZOOM, the cast tries to design and build a bridge made out of drinking straws that will support the weight of 200 pennies.

This video segment from Regents Review 2.0 uses a trigonometry equation to determine the height of a flagpole located in front of the school.

Have you ever wondered what happens behind the scenes in a theater? In this video visit the Lexington Children’s Theatre to get a peek behind the scenes of a theatrical production from set creation to the final dress rehearsal.

This interactive activity, from the Building Big Web site, explores tunneling and the tools and methods used to do the job.

In this video from Wide Angle, visit a makeshift night school in rural India designed to allow child laborers who work during the day to obtain an education.

This workshop is an introduction to how actors build characters and relationships, transforming the written words to actions and presence on stage. Students will explore Shakespeare’s use of words, rhythms, and language in Twelfth Night through activities that exercise vocal acting skills. This resource contains a Short Video with the actors discussing this topic, an example in the Full Workshop Video, an Excerpts Video containing examples from the full play, and a walk through in the Lesson Plan.

Students are introduced to traditional folk music with an animated rendition of a familiar song, “Twinkle Twinkle Little Star.” The video features shadow puppets and a crankie—a long illustrated scroll, which has been used as a method of storytelling since the 19th century.

In this video segment from Cyberchase, Digit must a make a straight line between the two points and then follow the path created.

Jackie and Matt are looking at the same object along two different lines, in this video segment from Cyberchase.

Investigate the academic fraud that affected thousands of UNC students and athletes with this video and educational materials from PBS NewsHour from October 23, 2014.