Fact-sheet on the topic of friction -- it covers limiting friction and angle of friction.
Naming Clothes using Lamh signs
Naming clothing items using Lamh signs Oral language is encouraged. Suitable for students with Moderate/Severe Special Needs.
Rain forests and Deforestation
Lesson plan covering the diversity of animal and plant life in rainforests and asks questions about the threat of deforestation worldwide. Also features weblinks and a crossword activity.
Making a Video Microscope System
Instructions for making an adapter for a home video camera so that it can be used with a microscope in a school laboratory.
"Must a Fellow Wait to Die?": Workers Write to Frances Perkins
Silicosis, a deadly lung disease caused when workers inhale fine particles of silica dust—a mineral found in sand, quartz, and granite—became a national cause célèbre during the Great Depression when it was recognized as a significant disease among lead, zinc, and silver miners, sandblasters, and foundry and tunnel workers. In 1938 the federal government declared silicosis America's number one industrial health problem and Secretary of Labor Frances Perkins convened a National Silicosis Co
Bandits or Patriots?: Documents from Charlemagne Pralte
In 1910, an international consortium of banks refinanced Haiti's international debt and took control of the country's treasury. In 1914, the bank refused to issue gold payments to the Haitian government and asked the U.S. military to protect the gold reserves. On December 17, 1914, U.S. marines landed in Haiti and moved the gold to the bank's New York vaults. Eight months later, the marines again landed in Port au Prince, Haiti's capital, this time claiming the need to protect foreign lives and
"The Greatest Tyrant in the State of Pennsylvania": A Late Nineteenth-Century Rail Worker Describes
Although publicists for the Gilded Age corporations celebrated efficiency and the science of management, their employees did not always join the celebration. What looked like careful and disciplined management from one perspective was often viewed as petty tyranny from below. While some workers assailed upper management for this abuse others experienced the tyranny more directly in their day-to-day work lives. In this transcript taken from testimony before the U. S. House of Representatives in t
"I Always Had Pads with Me": A G.I. Artist's Sketchpad, 1943-1944
In the wake of the attack on Pearl Harbor and the declaration of war, thousands of Americans enlisted in the U.S. armed forces. Among them was twenty-year-old Bronx resident Ben Hurwitz. Like many of the men and women who entered military service, Hurwitz (who changed his name to Brown after the war) kept a record of his experiences. But his "journal" was a sketchpad, and, during his two years in North Africa and Italy, Corporal Hurwitz drew and painted at every opportunity. Hurwitz's pictures a
W.E.B. DuBois Critiques Booker T. Washington
The most influential public critique of Booker T. Washington's policy of racial accommodation and gradualism came in 1903 when black leader and intellectual W.E.B. DuBois published an essay in his collection The Souls of Black Folk with the title "Of Mr. Booker T. Washington and Others." DuBois rejected Washington's willingness to avoid rocking the racial boat, calling instead for political power, insistence on civil rights, and the higher education of Negro youth.
Haymarket Martyr Albert Parsons's Last Words to His Wife
The Chicago radicals convicted of the infamous May 4, 1886 Haymarket Square bombing in which one policeman was killed remained openly defiant to the end. In his final letter to his wife, written August 20, 1886 from the Cook County "Bastille" (jail), convicted Haymarket bombing participant Albert R. Parsons, an Alabama-born printer, admitted that the verdict would cheer "the hearts of tyrants," but still optimistically predicted that "our doom to death is the handwriting on the wall, foretelling
A Mule Spinner Tells the U.S. Senate about Late 19th century Unemployment
Fall River, Massachusetts, mill worker Thomas O'Donnell (who had immigrated to the U.S. from England eleven years earlier) appeared before the U.S. Senate Committee on Education and Labor on October 18, 1883, to answer the panel's questions about working-class economic conditions. An unemployed mule spinner for more than half of the year, he described the introduction of new production methods at the Fall River, Massachusetts, textile factory where he worked as a mule spinner (a worker who tende
"Speak, Garvey, Speak!"A Follower Recalls a Garvey Rally
The Jamaican-born Marcus Garvey, a brilliant orator and black nationalist leader, turned his Universal Negro Improvement Association (UNIA) into the most important black organization in the United States in the early 1920s. Garvey's speeches often drew huge audiences, and stories of Garvey's stubborn resistance in the face of white hostility proliferated among his supporters. In an oral history interview, devotee Audley Moore remembered the Jamaican's defiant behavior at a rally in New Orleans c
Kate Richards O'Hare's Life as a Socialist Party Organizer
In her autobiographical essay, "How I Became a Socialist Agitator," which was first published in Socialist Woman in October 1908, Socialist Party organizer Kate Richards O'Hare credited her career as a "Socialist agitator" to her youthful exposure to poverty and "sordid suffering." As she explained in this essay, her disillusionment with the church and a talk by labor organizer "Mother"Jones further pushed her toward socialism.
"Forty-Two Cents an Hour" for Twelve to Fourteen Hours a Day: George Milkulvich Describes Work in th
In the dramatic 1919 steel strike, 350,000 workers walked off their jobs and crippled the industry. The U.S. Senate Committee on Education and Labor set out to investigate the strike while it was still in progress. In his testimony before the committee, George Milkulvich, an immigrant from the Croatian region of Dalmatia (along the eastern shore of the Adriatic Sea), gave a straightforward explanation of what he was striking for--"better treatment."
Model United Nations Headquarters
Model United Nations (UN) is an authentic simulation of the U.N. General Assembly and other multilateral bodies. This Headquarters homepage offers an 'ask an ambassador' section, an overview of the Model UN, FAQ, information on how to get started and how to prepare for a conference. Users can also follow links to several interactive forums, a conference calendar, additional links and e-news.
The Living Edens: Virtual Yellowstone Tour
This Starting Point page describes a virtual tour of Yellowstone National Park in Wyoming featured on the Public Broadcasting Service (PBS) website. In this tour, students act as park rangers to research geological features of Yellowstone, locate these features on maps, and describe and define associated geologic terms. The features discussed include geysers, hot springs, canyons, waterfalls and mudpots. On this page, users can find learning goals, teaching notes and tips, teaching materials, as
The Moon Phases java applet provides an animated view of the moon, either from Earth, or from above the ecliptic. The animation changes phases and can be seen from a top view, earth view or both. The page also provides vocabulary terms for each of the phases and other interesting information.
Home, Home on the River
In this case study activity, students will examine the complex issues that result from human use of ecologically sensitive areas. The students will investigate these issues from the point of view of their major/career path. This example page is part of the Starting Point collection and was adapted from the Lifelines Online case study. Users can access information about the exercise's learning goals, context for use, teaching notes and tips, teaching materials, assessment ideas, references and to
National Weather Service: Graphical Forecast
This site displays a click-and-zoom map of the US showing forecast temperatures as well as several other meteorological variables, normally updated every hour. Also available are maps showing chance of precipitation, temperature and wind, weather, dew point, weather, precipitation, dew point and cover. Maps can be changed to see forecasts for the current day, that night, and three days following. This is an experimental product of the National Digital Forecast Database, produced by the National
Mapping Plate Boundaries
This in-class exercise, profiled on the Starting Point website, is intended to have the students discover plate boundaries based on the uneven geographic occurrence of geologic hazards. The website details the learning goals, teaching notes and materials, and context for this activity. It offers an extensive list of links to additional resources and materials for lecture on geologic hazards and plate tectonics.