In this video segment adapted from NOVA, a team of archaeologists and engineers explores different uses of the lever by recreating the engineering feats of the ancient Easter Island peoples.

Three billion years ago single-celled underwater bacteria used sunlight to convert carbon dioxide and water into tiny oxygen bubbles. Soon plants were turning an atmosphere full of volcanic carbon dioxide into oxygen. As we learn in this video segment from Interactive NOVA: "Earth," photosynthesis created a good home for animals and humans, though not for some primitive organisms. They had to retreat to where oxygen couldn't reach them. Join researchers as they search for these organisms, now considered tiny time capsules from a time before there was oxygen on Earth.

In this video segment adapted from NOVA, scientists are startled to discover evidence for the three key ingredients for life on Saturn's moon Enceladus.

How can you lift a heavy metal table using air? In this video segment adapted from ZOOM, cast members succeed in lifting a table using their own breath and a few plastic bags.

This video segment adapted from Shedding Light on Science describes how astronomical distances can be measured in units of light-years, and how the finite speed of light allows astronomers to study how the universe looked long ago.

This video segment adapted from Shedding Light on Science demonstrates the law of reflection by showing how light energy is reflected off both smooth and rough surfaces at predictable angles.

After their carts collide in a hardware store, two teachers discover that they both bought the same items in different quantities. With limited information, this segment demonstrates how to use an equation to determine the cost of each item.

"Nature furnished the materials for architectural motifs." This quote from Frank Lloyd Wright illustrates his desire to connect humans to the natural landscape through architecture. One successful example of this concept was his design of art glass windows that connected with the trees and leaves outside. Examine the beautiful window patterns Frank Lloyd Wright designed for the Martin House and then design your own Wright-style window inspired by nature.

More than a biography of America’s greatest architect, Frank Lloyd Wright's Buffalo is a story of family, friendship and the meaning of home in American life. The program explores how a friendship spanning decades affected the structural aesthetic of a major American city and made a significant impact on architectural history. Buffalo, New York has the unique privilege of having more Frank Lloyd Wright structures than any other city in America outside of Chicago. This collection of architecture is due to one man: Buffalo businessman Darwin D. Martin. The centerpiece of Wright’s work in Buffalo is one of Wright's earliest designs, the Darwin Martin House. Built in 1904, it precedes such masterpieces as the Robie House and Fallingwater and is considered by many as the finest example of his prairie house design. Learn more about the WNED PBS original production here.

Students practice using algebraic expressions by recording data from a video segment in which two staircases ascend at different rates. They record the patterns in two-column tables, draw line graphs and write simple algebraic relations.

This video segment from Between the Lions uses a line of laughing Lions to help build vocabulary and illustrate the meaning of words that typically challenge young children.

This video segment from a WPSU documentary Liquid Assets connects public health to the availability of clean and safe drinking water and elaborates on the threats our bodies face due to increasing kinds and quantities of pollutants.

This Nature video shows the migratory patterns and habits of the Rufous hummingbird.

What is it that distinguishes a living organism from a nonliving object? This collection of images presents examples that aren't as clear-cut as one might think, enticing students to question the meaning of life.

In this video segment adapted from the Alaska Native Heritage Center, discover the connections between Alaska Native subsistence culture and the natural cycle of the seasons.

This video, adapted from material provided by the ECHO partners, illuminates how living on the coast affects individuals and communities, particularly humans' interrelationships with natural resources.

A patient discusses diabetes and how he manages his carbohydrate intake in this video segment from TV 411.

In this interactive activity adapted from Annenberg Learner’s Teaching Math Grades 6–8, students interpret two line graphs to identify possible locations where the data might have been gathered.

In this Cyberchase video segment, Matt and Jackie must figure out which combination of knob and key will get them one step closer to retrieving the Black Crystal.

Get an inside look into the iterative process of logo design with graphic designer, Mark Winn. Here Mark takes us through the process of conceptualizing a logo theme and executing the design from pencil to pixel while providing some serious time-saving techniques in Illustrator along the way.

In this digital short from Unladylike2020, students learn about Lois Weber, the first woman director of a feature film, and her impact on silent film and early Hollywood. Utilizing video, discussion questions, vocabulary and an in-class activity, students explore the life and legacy of Lois Weber and her role in the fight for women’s suffrage.