PBS
Pbs Learning Media: The Red Queen
An example of the Red Queen hypothesis, the sexual population of Mexican Poeciliid fish is able to keep up with a changing environment, while the asexual populations are not as successful. From Evolution: "Why Sex?" Video length: 4 min....
PBS
Pbs Learning Media: Animal and Plant Cell
Think you can tell a yam from a yak? Examine these still images of typical plant and animal cells from Biology by Kenneth R. Miller and Joseph Levine. What similarities and differences can you find?
PBS
Pbs Learning Media: Virtual Pendulum
This interactive activity from ZOOM offers a chance to experiment with a virtual pendulum and to see how it can be influenced by a variety of factors.
PBS
Pbs Learning Media: What Happens When an Oil Spill Occurs?
This interactive activity from McDougal Littell/TERC visualizes the effects of the Exxon Valdez oil spill, factors that influence oil spill behavior and impact, and techniques used to contain and clean up oil spills at sea.
PBS
Pbs Learning Media: Pulsars: Little Green Men
The story behind Jocelyn Bell's role in the discovery of pulsars is told in this colorful, comic-book-style resource from A Science Odyssey Web site.
PBS
Pbs Learning Media: Coastal Geological Processes
This interactive resource adapted from the National Park Service describes the many forces that affect shorelines, including tides, weathering, erosion, and deposition. Includes background reading handout and discussion questions.
PBS
Pbs Learning Media: Coastal Geological Materials
This interactive resource adapted from the National Park Service describes the different kinds of sediments that make up coastlines, with a focus on the variety in color, size, and sorting.
PBS
Pbs Learning Media: How Is a Radio Wave Emitted?
This illustrated essay from A Science Odyssey Web site explains the science behind radio waves, including the role of electrons and electromagnetic fields.
PBS
Pbs Learning Media: Global Warming: Carbon Dioxide and the Greenhouse Effect
This video segment adapted from NOVA/FRONTLINE demonstrates the physical property of carbon dioxide that causes the greenhouse effect. Includes background reading and discussion questions. [2:26]
PBS
Pbs Learning Media: Great Ocean Conveyor Belt: Part I
This image from GRID-Arendal depicts the major circulation pattern of the ocean, illustrating interactions between temperature, salinity, and depth. Includes a background reading handout and several discussion questions.
PBS
Pbs Learning Media: See a Reversal
View a computer model simulation from NOVA Online that illustrates what happens during a magnetic field reversal, an infrequent occurrence that may be currently underway.
PBS
Pbs Learning Media: Water Vapor Circulation on Earth
This simulation from the National Center for Atmospheric Research portrays annual patterns in water vapor and precipitation across the globe, illustrating general circulation patterns as well as seasonal and regional variation. [4:52]
PBS
Pbs Learning Media: Earth in Motion: Seasons
This interactive activity from the Adler Planetarium explains the "reasons for the seasons." Featured is a game in which Earth must be properly placed in its orbit in order to send Max, the host, to different parts of the world during...
PBS
Pbs Learning Media: Monarch Migration
This video from Nature features the start of the monarch butterfly's northward trek. [3:02]
PBS
Pbs Learning Media: Einstein: A Timeline of His Life
This illustrated timeline from the NOVA Web site follows Albert Einstein's life, including 1905, his "Miracle Year," during which he developed his Special Theory of Relativity and the equation, E=mc2.
PBS
Pbs Learning Media: Cloud Types
This interactive resource, adapted from NASA's S'COOL Project Tutorial, explains how you can classify and identify various types of clouds.
PBS
Pbs Learning Media: Documenting Brown: Civil Rights Act of 1964
The Civil Rights Act of 1964 helped enforce the Brown ruling, a decade later.
PBS
Pbs Learning Media: March on Washington Flyers
These 1963 flyers announce the speakers and issues for the March on Washington; from the Birmingham Civil Rights Institute.
PBS
Pbs Learning Media: Rate Tornado Damage
In this interactive activity from NOVA Online, use the Fujita tornado intensity scale to assess the level of destruction left in the wake of actual tornadoes.
PBS
Pbs Learning Media: Convective Cloud Systems
This video segment adapted from the Atmospheric Radiation Program explains the differences in the formation of tropical convective cloud systems over islands and over the ocean. [1:07]
PBS
Pbs Learning Media: Deserts
Not all deserts are the same. This still collage produced for Teachers' Domain features views of different deserts around the world.
PBS
Pbs Learning Media: Visualizing Topography
Explore the topography of a hill, a valley, and a cliff in this interactive activity featuring visualizations of three-dimensional topography in two dimensions. Adapted from Stephen Reynolds' "Visualizing Topography."
PBS
Pbs Learning Media: Einstein: How Smart Was He?
This essay from the NOVA Web site explores the impact Einstein made on physics and most everything we know about the cosmos.
PBS
Pbs Learning Media: The Bridge Challenge
This interactive activity, from the Web site developed for the PBS series "Building Big," use your knowledge of bridge design to match the right bridge location in a fictitious city.