Blasts kill at least 15 in Iraq's Tikrit
July 28 - Two suicide bombers killed at least 15 people and wounded more than 30 in Iraq's Tikrit city. Deborah Lutterbeck reports.
Clashes in Chile
July 28 - Chilean students clash with police in latest in a series of protests over education budgets. Rough Cut (no reporter narration).
Devices of Wonder: Cinema through the Ages
The Devices of Wonder Web site explores the ancestors of modern cinema, cyborgs, and other optical devices. The Web site was created in conjunction with an exhibition, which presented the parlor games, natural wonders, moving image devices, and scientific instruments that have entertained and educate
Subtraction Across Zeros
In this video, a student shows how to subtract with regrouping using place value manipulatives. The student explains the problem step-by-step, writes the problem, and shows the problem with manipulatives. ( 1:34)
Identifying Figurative Language
This video explains how to identify figures of speech and figurative language through a series of questions. (01:35)
Digital Library Object - Air Force intelligence officer targeteers : a discussion on specialization.
Link To Full Record
Carmen Sandiego
van gogh, mona lisa, lascaux caves
Transport Into and Out of Nucleus I from the course General Biochemistry and Molecular Biology
General Biochemistry and Molecular Biology - Fall 2006. This course covers molecular biology of prokaryotic and eukaryotic cells and their viruses. Mechanisms of DNA replication, transcription, translation. Structure of genes and chromosomes. Regulation of gene expression. Biochemical processes and principles in membrane structure and function, intracellular trafficking and subcellular compartmentation, cytoskeletal architecture, nucleocytoplasmic transport, signal transduction mechanisms, and c
The Holloway Series in Poetry: Aaron Kunin
A rising star in the poetry world, Kunin is also a literary critic and a novelist. His formally innovative work has been described as "tragicomic," and it is with a certain thrill that one realizes his poems have managed to bundle shame with hilarity, high tension with the highly ridiculous, sharp wit with ominous portents.
His first book, Folding Ruler Star (Fence Books, 2005), was devised as a "value-neutral Paradise Lost" in which the structures of belief, shame, and hierarchy are explored b
The effects of acid rain on a stream in the forest
Cars and power plants that burn fossil fuels release smoke that is full of chemicals. These chemicals float into the atmosphere, get trapped in clouds, and make the rain more acidic. This is known as acid rain.
Sonia Sanchez: The Meaning of Malcolm X
Poet Sonia Sanchez, interviewed here for Eyes on the Prize, describes what the outspoken civil rights leader Malcolm X represented to African Americans in the 1960s.
Heavy Helicopters
Students learn about weight and drag forces by making paper helicopters and measuring how adding more weight affects the time it takes for the helicopters to fall to the ground.
Pop Rockets
Students design and build a paper rocket around a film canister, which is used as the engine. An antacid tablet and water are put into the canister, react to form carbon dioxide gas, and act as the pop rocket's propellant. With the lid snapped on, the continuous creation of gas causes pressure to build up until the lid pops off, sending the rocket into the air. The pop rockets demonstrate Newton's third law of motion: for every action, there is an equal and opposite reaction.
Come On Over Rover
Have you ever wondered why it takes such a long period of time for NASA to build space exploration equipment? What is involved in manufacturing and building a rover for the Red Planet? During this lesson, students will discover the journey that a Mars rover embarks upon after being designed by engineers and before being prepared for launch. Students will investigate the fabrication techniques, tolerance concepts, assembly and field-testing associated with a Mars exploratory rover.
Midwest Snow Belt Flyover: March 13, 2000
SeaWiFS true color image of a Midwest snow belt taken on March 13, 2000
Welfare Economics Radiative Exchange Between Non-Black Surfaces II from the course Heat Transfer Martha Leads the Charge Immortal Bricks and Mortar Oral History
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This course covers transport processes of mass, momentum, and energy from a macroscopic view with emphasis both on understanding why matter behaves as it does and on developing practical problem solving skills. The course is divided into four parts: introduction, conduction, convection, and radiation.
While General George Washington commanded the troops in the field, Martha led the charge at home. Historic Interpreter Lee Ann Rose describes the impact women made during the Revolution.Author(s):
Buildings bear silent witness to the history that happens inside them. Conservator Matt Webster makes sure structures live to tell their tales.Author(s):
African American history is both discovered in and continued by an ancient oral tradition. Richard Josey describes the process of restoring a community's voice.
