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RESOURCE	GRADE LEVEL	MEDIA TYPE
Hop ‘Til You Drop This video segment from Between the Lions uses a cheer—"Hop 'Til You Drop"—to build letter knowledge, and to demonstrate how movement and letter chanting can illustrate the words being spelled. Accessibility features: Caption	Pre-K-1	Video
Horned Lizard In this video from Outdoor Nevada, learn about the habitat, diet, and defense mechanisms of horned lizards. Accessibility features: Caption	3-12	Video
A House for Teddy Bear In this video segment from PEEP and the Big Wide World, children experiment with cardboard and build a house for their stuffed animals. Accessibility features: Caption	K-2	Video
How Big Is the Oil Spill? Compare the size of the 78,000-square-mile BP oil spill in the Gulf of Mexico to more familiar things, in this video adapted from Need to Know. Accessibility features: Caption	6-12	Video
How Cancer Cells Grow and Divide This animation from NOVA: "Battle in the War on Cancer: Breast Cancer" describes how oncogenes cause cancer and how cancerous cells can spread throughout the body. Accessibility features: Audio Description, Caption, Transcript	6-12	Video
How DNA Replicates This narrated animation from Interactive NOVA: "The Secret of Life" illustrates DNA replication. Accessibility features: Caption	9-12	Video
How Do Avalanches Form? In this video segment adapted from NOVA, dramatic footage of avalanches and animations of ice crystals illustrate how a layer of weakly-bonded snow can contribute to a devastating avalanche. Accessibility features: Caption	6-12	Video
How Do You Get to the Moon? This video, adapted from NOVA, showcases the competing engineering plans designed for landing a person on the Moon for the first time. Accessibility features: Caption	6-12	Video
How Elements Form Compounds This video excerpt from NOVA: "Hunting the Elements" examines how elements come together in chemical reactions to form compounds. Accessibility features: Caption, Transcript	6-12	Video
How Light Travels In this video segment adapted from Shedding Light on Science, observe demonstrations of the fundamental idea that light travels in straight lines. Accessibility features: Caption	3-8	Video
How the Ancient Egyptian Pyramids Were Built This resource featuring video segments adapted from NOVA: “This Old Pyramid” tells the story of the Egyptian pyramids, from the first, relatively small step pyramid to the Great Pyramid of Khufu. Accessibility features: Caption	3-12	Video
How the Arctic Ecosystem Might Change In this video segment adapted from the National Film Board of Canada, learn why the unique Arctic ecosystem may be replaced if global warming continues to melt sea ice. Accessibility features: Caption	6-12	Video
How the Body Responds to Exercise In this video segment adapted from NOVA, follow novice runners as they train for a marathon, and discover how quickly the body responds to regular aerobic exercise. Accessibility features: Caption	6-12	Video
How the Inner Solar System Formed In this video segment adapted from NOVA, explore the theory that small bits of gas and dust combined to form protoplanets billions of years ago, which in turn collided to create the four rocky planets of the inner solar system. Accessibility features: Caption	6-12	Video
How the Mexican-American War Affected Slavery This video adapted from American Experience: “The Abolitionists” describes how new territory acquired by the United States in the Mexican-American War, and the Great Compromise of 1850 that it generated, fueled greater division between abolitionists and slave owners. Accessibility features: Caption	6-12	Video
How The Ohio River Was Formed This video segment adapted from KET's Where the River Bends demonstrates how climate change and glacier movement during the Ice Ages destroyed the old Teays River and created the Ohio River, Kentucky's northern border. Accessibility features: Caption	6-12	Video
How to Prevent Future Bhopals Henrik Selin, a professor of international relations at Boston University and author of the forthcoming book Global Governance of Hazardous Chemicals, assesses the risk of future disasters like the 1984 gas leak in Bhopal India, in this audio segment from PRI's The World Science Podcast. Accessibility features: Caption	9-12	Audio
How to Reduce Lead Exposure Learn how to prevent childhood lead poisoning in this video segment adapted from Lead Awareness for Parents by the Coalition to Prevent Lead Poisoning. Accessibility features: Caption	6-8	Video
How Would You Turn a Bolt in Space? In this fast-paced NASA Brain Bites™ video, an astronaut demonstrates the impact of microgravity on the use of tools in space. Accessibility features: Caption	3-8	Video
Hubble's Expanding Universe This adapted video segment, using footage from NOVA and NASA, examines Edwin Hubble's work and how his findings laid the foundation for the Big Bang theory. Accessibility features: Caption	6-12	Video
Hubble Space Telescope This video segment from IdahoPTV's D4K describes the Hubble Space Telescope, shows visualizations of how optical and reflecting telescopes work, and shows original footage of the Hubble in Space. You hear why a telescope in space is valuable as well as see some of the amazing photographs the different cameras on the Hubble have taken. Accessibility features: Caption, Transcript	4-6	Video
Hubble Telescope: Looking Deep This video segment adapted from the Space Telescope Science Institute shows what the Hubble telescope found when it stared at a single, nearly empty spot in the sky for 10 days in 1995. The unexpected result was a picture of a multitude of galaxies stretching into the distance. Accessibility features: Caption	6-12	Video
Human Chromosome 2 In this video segment adapted from NOVA: "Judgment Day: Intelligent Design on Trial," learn how modern genetics and molecular biology offer compelling support for evolution. The video features an interview with biologist Ken Miller. Accessibility features: Caption	6-12	Video
Human Genome Project This video segment from NOVA: "Cracking the Code of Life" looks at the meaning and significance of the effort to decode the human genome. Accessibility features: Audio Description, Caption	6-12	Video
Hummingbirds This video segment from Outdoor Nevada explores the traits, behaviors, and habitat of four hummingbird species. Accessibility features: Caption	3-12	Video
Hunters Navigate Warming Arctic In this video segment adapted from the National Film Board of Canada, learn how the Inuit people have used their traditional knowledge to understand and adapt to changes in their Arctic environment, particularly when hunting and navigating the landscape. Accessibility features: Caption	6-12	Video
Hurricanes: New Orleans Under Threat This video segment adapted from NOVA scienceNOW exposes how decades of development and geography combined to make the potential damage from a hurricane uniquely devastating in New Orleans, Louisiana. Accessibility features: Caption	6-12	Video
Hurricanes: New Tools for Predicting This video segment adapted from NOVA scienceNOW features new advances in predicting the intensity of hurricanes. Accessibility features: Caption	6-12	Video
Ice-Core Record of Climate This video excerpt from NOVA: “Extreme Ice” explores how ice cores reveal a relationship between greenhouse gases and climate. Accessibility features: Caption, Transcript	6-12	Video
Idaho Fish This video segment from IdahoPTV's D4K introduces Idaho's native fish species, and discusses why some populations are doing fine while others are struggling with declining numbers. Accessibility features: Caption, Transcript	4-6	Video
Immune Cells in Action In this video segment from The Secret of Life Teaching Modules: "Nothing to Sneeze At: Viruses," watch as a virus attacks a cell, and learn how the immune system reacts to this onslaught. Accessibility features: Audio Description, Caption	6-12	Video
The Impact of Deportation In this video excerpt from FRONTLINE: "Lost in Detention," an immigrant family with American-born children copes with the aftermath of the mother's deportation to Mexico because she lacked legal status. Accessibility features: Caption	6-12	Video
The Impact of Technology: Cars This video segment adapted from A Science Odyssey looks at the invention of the automobile and the development of mass production. Accessibility features: Caption	3-12	Video
The Impact of Technology: Nylon This video segment adapted from A Science Odyssey looks at the invention of nylon. Accessibility features: Caption	6-12	Video
The Impact of Technology: Society This video segment adapted from A Science Odyssey considers modern technology's impact on society. Accessibility features: Caption	6-12	Video
$The Index of Refraction and Snell’s Law$ The Index of Refraction and Snell’s Law Learn about the index of refraction and Snell's law in this video from the ICT Center. Accessibility features: Caption	11-12	Video
Indiana Bats of Carter Cave This KET video segment from Kentucky Life explores one of the endangered habitats of Indiana bats and describes the benefits of bats to humans. Accessibility features: Caption	K-12	Video
Inflatable Moon Habitat Visit an inflatable habitat designed for astronauts to live in on the Moon in this video adapted from NASA 360. Accessibility features: Caption	6-12	Video
Information Technology: Computer Systems Engineer Watch how a community college education took one person from being a computer know-nothing to having a career as a successful information technologist, in this video adapted from Pathways to Technology. Accessibility features: Caption	9-12	Video
Information Technology Student: Technical & Network Support In this video adapted from Pathways to Technology, a community college student discovers how his information technology (IT) skills can be applied in the working world. Accessibility features: Caption	9-12	Video
Information Technology Student: Computer Programming & Support Learn how taking her first online course led one woman to study computer programming, in this video adapted from Pathways to Technology. Accessibility features: Caption	9-12	Video
Information Technology: Training & Careers Explore the range of job opportunities you can pursue with an information technology (IT) degree, in this video excerpted from Pathways to Technology. Accessibility features: Caption	9-12	Video
Infrared: More Than Your Eyes Can See In this video segment adapted from NASA, astronomer Michelle Thaller introduces the world of infrared light and demonstrates how infrared cameras allow us to see more than what the naked eye can perceive. Accessibility features: Caption	3-12	Video
Ingredients for Life: Carbon This video segment adapted from NOVA illustrates why carbon is at the center of life on Earth. It also asks whether carbon-based life might exist on other planets. Accessibility features: Audio Description, Caption	6-12	Video
Innovation through Experimentation: Kiyoe Wellington In this From the Top at Carnegie Hall video segment, hear a young double bassist from Hawaii play a soulful contemporary piece. Accessibility features: Caption	5-12	Video
Inside an Explosion From afar, an explosion may seem like one of the most incredible examples of chaotic interaction. But once you look closer, as in this video from QUEST, you will find that large-scale explosions require very precise interactions to occur in just the right sequence. Accessibility features: Caption	8-12	Video
In Small Doses: Arsenic In this video segment adapted from In Small Doses: Arsenic, learn how naturally occurring arsenic moves into groundwater and how much is too much for human consumption. Accessibility features: Caption	6-12	Video
Inspector Detector Challenge In this video from Design Squad Nation, kids design and build magnetic-field detectors and use them to find hidden magnets. They also learn how NASA uses magnetometers to learn what is going on inside a planet or moon. Accessibility features: Caption	4-8	Video
The Inspiration This video segment from American Experience: "Freedom Riders" describes the influence of India's Mahatma Gandhi's nonviolent tactics on the struggle to end illegal discrimination against African Americans in the United States. Accessibility features: Caption	6-12	Video
$Interference and Diffraction$ Interference and Diffraction Learn about interference and diffraction in this video from the ICT Center. Accessibility features: Caption	11-12	Video
Introduction to Plastics Learn about the basic process of plastics production, and observe how monomers combine to form polymer chains, in this video segment adapted from Pennsylvania College of Technology and WVIA. Accessibility features: Caption	9-12	Video
Inuit Observations of Climate Change In this video adapted from the International Institute for Sustainable Development, an Inuit community collaborates with Western scientists studying climate change. Inuit observations are recorded and included in the data collection process, expanding the scientists' understanding of changes in the area. Accessibility features: Caption	6-12	Video
Investigating a Suspension Bridge In this video segment adapted from ZOOM, the cast builds a suspension bridge from a couple of chairs, some cardboard, and rope. Accessibility features: Caption	3-8	Video
Investigating Neanderthals This video excerpt from NOVA scienceNOW looks at how head shapes of Neanderthals and modern humans differ. Accessibility features: Caption, Transcript	6-12	Video
Invisible Force Challenge In this video from Design Squad Nation, kids design and build systems that use magnets to control the speed and direction of a rolling ball. They also learn how NASA uses gravity to direct a spacecraft. Accessibility features: Caption	4-8	Video
Io and Volcanism In this video segment adapted from NOVA, a scientist explains the unexpected heat source fueling widespread volcanic activity on Io, a moon of Jupiter that many had previously assumed to be frozen. Accessibility features: Caption	6-12	Video
Is Autism Genetic or Environmental? In this video segment from Greater Boston, learn about conflicting theories regarding the cause of autism. Accessibility features: Caption	9-12	Video
Is It Alive? What is it that distinguishes a living organism from a nonliving object? This video presents examples that aren't as clear-cut as one might think, enticing students to question what it means to be alive. Accessibility features: Caption	K-5	Video
Island of Stability In this video segment adapted from NOVA scienceNOW, follow scientists in their quest to understand how stable elements are made and how to create the elusive element 114. Accessibility features: Caption	9-12	Video
Iñupiaq Whale Hunt This video, adapted from material provided by the ECHO partners, provides a portrait of Iñupiaq whaling as a community activity, as told through the story of one hunt. Accessibility features: Caption	6-9	Video
Japanese Culture: Japanese Aesthetics Shozo Sato provides a brief overview of Japanese aesthetics and explains the major differences between Western and Japanese aesthetics. He talks about the Japanese emphasis on stylization and the function of art and the artist in Japanese society. Accessibility features: Caption	6-12	Video
Japanese Culture: Kabuki Actor's Technique Shozo Sato describes Kabuki acting technique and the training that Kabuki performers, traditionally all male, go through in order to learn how to play male, female, young, and old characters. He demonstrates vocal inflections and actual movements—walking, how the head is held, poses—of various Kabuki characters. Accessibility features: Caption	6-12	Video
Japanese Culture: Kabuki Makeup Kabuki master Shozo Sato applies makeup to actor Michael Goldberg as he discusses about how makeup is applied and how colors and lines help suggest character. In Kabuki theater, makeup is used to express a character’s personality. Accessibility features: Caption	6-12	Video
Japanese Culture: Scene from Macbeth Kabuki-Style In the segment Macbeth: Kabuki Style, actors Michael Goldberg and Barbara Robertson perform the scene from Macbeth in which Macbeth and Lady Macbeth plot the murder of Duncan. The text used by the actors in this video was adapted to better suit Kabuki-style performance and only resembles the standard text of Macbeth. Accessibility features: Caption	6-12	Video
John Snow: Pioneer of Epidemiology The key tactics of epidemiology—surveillance and response—were first used by Dr. John Snow during a cholera outbreak in 1850s London, as dramatized in this video segment adapted from Rx for Survival. Accessibility features: Caption	6-12	Video
Juice Boxes A kid discovers that an ordinary juice box is surprisingly high-tech and, once discarded, will last for 300 years, in this animated video from LOOP SCOOPS. Accessibility features: Caption	1-4	Video
Jupiter: The Largest Planet This video from NASA explores our solar system's largest planet, Jupiter, including its role in the evolution of the solar system. Accessibility features: Caption	6-12	Video
Jupiter: Earth's Shield Jupiter's immense gravity protects Earth from asteroids. In this video segment adapted from NOVA, scientists searching for signs of life in the universe identify solar systems with Jupiter-like planets that may be shielding smaller nearby Earth-like planets from comets and asteroids. Accessibility features: Caption	6-12	Video
The Kemps Ridley Sea Turtle This video adapted from Texas Parks and Wildlife Department describes how humans are helping restore safe nesting grounds for the critically endangered Kemp's ridley sea turtle to ensure its successful repopulation. Accessibility features: Caption	3-12	Video
Kid Designer: A Comfortable Cardboard Chair Follow along in this video segment from ZOOM as 13-year-old Nick explains how he came up with a design, tested materials, and constructed his own cardboard chair. Accessibility features: Caption, Transcript	3-12	Video
Kid Inventor: Tennis Ball Picker-Upper Tired of bending down to pick up those runaway tennis balls? Leang can help you out with his handy invention in this video segment from ZOOM. Accessibility features: Caption, Transcript	K-5	Video
Kid Inventor: The Collapsible Lacrosse Stick In this video segment from ZOOM, Lauren explains how she invented a way to make her lacrosse stick fit in her backpack. Accessibility features: Caption, Transcript	K-8	Video
Kid Inventor: The Couch Protector Want to keep your dog off the couch? In this video segment from ZOOM, Jason demonstrates his invention that does just that: a couch protector. Accessibility features: Caption, Transcript	3-12	Video
Kid Meteorologist ZOOM guest Amy wants to be a meteorlogist and volunteers at a weather observatory. In this adapted video segment, she shows us instruments used to predict the weather and describes how air pressure affects weather patterns. Accessibility features: Caption	K-8	Video
Kid Musician: Mexico's Guitar Town Visit with Andres during fiesta time at Paracho Michoacan, Mexico's "guitar town". As Andres shows in this video segment from ZOOM, guitar music goes beyond simple sound vibrations. Accessibility features: Caption, Transcript	K-5	Video
Killer Microbe Learn how biotechnology is used to analyze the evolution of a formerly harmless bacterium into a highly drug-resistant and lethal pathogen in this video segment adapted from NOVA scienceNOW. Accessibility features: Caption	9-12	Video
King Tut This video segment from IdahoPTV's D4K explores the evidence leading to a possible explanation of how King Tut died when he was only 20. Accessibility features: Caption, Transcript	4-6	Video
La'ona DeWilde: Environmental Biologist In this video profile produced for Teachers' Domain, meet La'ona DeWilde, an environmental biologist who integrates her Athabascan heritage and her Western scientific training to help remote Alaskan villages address environmental issues. Accessibility features: Caption	3-12	Video
A Language Immersion Story This video from Media That Matters: Immersion tells the fictional story of Moises, a young immigrant to the United States with limited English, as he struggles to do well in school. Accessibility features: Caption	5-12	Video
La Niña and Tornado Outbreaks This video excerpt from NOVA looks at how La Niña’s cool ocean temperatures may influence tornado outbreaks. Accessibility features: Caption, Transcript	6-12	Video
Laser Tag In this video adapted from QUEST, take a ride along with South San Francisco police officers and learn about the latest high-tech tools used in traffic law enforcement. Accessibility features: Caption	6-12	Video
Laser Technician Supervisor Follow a laser technician supervisor at his state-of-the-art workplace, and hear about the wide range of job skills he uses every day, in this video segment adapted from Connecticut's College of Technology/Regional Center for Next Generation Manufacturing. Accessibility features: Caption	9-12	Video
Laser Waterfall In this video from the Encyclopedia of Physics Demonstrations, observe how a laser beam is trapped in a water jet because the light reflects against the surface of the water. Accessibility features: Caption	6-12	Video
Lava Sampling on Kilauea Volcano, Hawaiʻi In this video segment adapted from NOVA, scientist Mike Garcia draws lava samples at the foot of the active Kilauea volcano to see if it is related to its neighboring volcano, Mauna Loa. Accessibility features: Caption	6-12	Video
Leafy Spurge This video segment from Evolution: "Extinction!" shows how biological control is successfully combating North Dakota's infestation of leafy spurge, a non-native plant. Accessibility features: Caption	9-12	Video
LED and Transmitter Characteristics Learn about fiber optic transmitters in this video from the ICT Center. Accessibility features: Caption	11-12	Video
Levers: Raising the Moai on Easter Island 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. Accessibility features: Caption	3-12	Video
Liberty Lands In this What's Up In The Environment? video segment, learn how a contaminated plot of land in Philadelphia was recycled into a beautiful public park called Liberty Lands. Accessibility features: Caption, Transcript	4-8	Video
LIDAR 3D Mapping See how researchers create 3-D maps of planets by using LIDAR (light detection and ranging) instruments in this video adapted from NASA. Accessibility features: Caption	9-12	Video
Life Beyond the Solar System This video excerpt from NOVA describes the search for disks of dust particles forming around new stars. Accessibility features: Caption, Transcript	6-12	Video
Life in the Deep Learn about some strange creatures that inhabit the deep oceans, including transparent sea cucumbers and oil eating tube worms, in this audio segment from PRI's The World Science Podcast. Accessibility features: Caption	9-12	Audio
Life on Enceladus? 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. Accessibility features: Caption	6-12	Video
Life on Europa? This video excerpt from NOVA suggests there is an ocean beneath the surface of Europa. Accessibility features: Caption, Transcript	6-12	Video
Life on Mars? This video excerpt from NOVA describes the discovery of water ice on Mars. Accessibility features: Caption, Transcript	6-12	Video
Life on Titan? This video excerpt from NOVA describes the discovery of methane lakes on Titan. Accessibility features: Caption, Transcript	6-12	Video
Life's Basic Ingredients This video excerpt from NOVA introduces the basic ingredients of life. Accessibility features: Caption, Transcript	6-12	Video
Life's Extreme Environments This video excerpt from NOVA explores microbes thriving in extreme environments. Accessibility features: Caption, Transcript	6-12	Video
Lifting with Air 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. Accessibility features: Caption, Transcript	K-8	Video
Light and Color This video segment adapted from Shedding Light on Science illustrates the dispersion of light through a prism and how raindrops refract sunlight to form rainbows. Accessibility features: Caption	6-12	Video
Light and the Law of Reflection 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. Accessibility features: Caption	3-12	Video