Alabama Learning Exchange
Alex: Three Principles of Civil Disobedience
Both Mahatmas Gandhi and Martin Luther King, Jr. were influenced by Henry David Thoreau's essay, "Civil Disobedience." Have students research and read, using the Internet, the first part of Thoreau's essay. Then have students write an...
Khan Academy
Khan Academy: Silver Shekel 2nd Jewish Revolt, Struck Over a Denarius of Hadrian
This silver coin shows how, in an act of defiance against Roman rule, the Jewish population in the province of Judaea over-struck portraits of the Emperor Hadrian with their own symbols. Jerusalem had been destroyed by Roman forces in 70...
Khan Academy
Khan Academy: Italian Gold Ground Painting
Many of the early works in the paintings collection of the J. Paul Getty Museum are altarpieces and fragments of altarpieces made for Italian churches. They were placed above altars and served as the focal point of the Mass. Churches in...
ArtLex
Art Lex: Composition
This online dictionary of art terms from Artlex is a valuable tool. The composition page explains how the term is used in the world of art. There are related links and works of art to explore.
Georgia State University
Georgia State University: Hyper Physics: Mirrors in Imaging
A discussion from Georgia State University of different types of mirrors and the images which they create. Discusses different instruments which use mirrors to produce images.
Georgia State University
Georgia State University: Hyper Physics: Mirror Instruments
This site from Georgia State University discusses the means by which mirrors and lenses are combined to produce an optical instrument which accomplishes a specific purpose. Good illustrations.
ArtLex
Art Lex: Emphasis
A complete description of the term, "emphasis," with links to show how emphasis relates to art. Includes examples of work by Klimt, Demuth, and Minor.
CK-12 Foundation
Ck 12: Physical Science: Lens
[Free Registration/Login may be required to access all resource tools.] What a lens is and what it does, concave and convex lenses.
Georgia State University
Georgia State University: Hyper Physics: Refractive Telescopes
This site from Georgia State University Physics Department gives a discussion of the manner in which light is refracted by refractive telescopes. Discusses the Galielean telescope and the astronomical telescope.
Physics Classroom
The Physics Classroom: Reflection/ray Model of Light: Reflection Rules Concave
Students learn two rules of reflection as it has to do with concave mirrors. These two rules will greatly simplify the task of determining the image locations for objects placed in front of concave mirrors.
Physics Classroom
The Physics Classroom: Refraction and the Ray Model of Light: Anatomy of a Lens
Illustrated diagrams in this tutorial help students understand the properties and functions of lenses.
Zero Bio
Zero Bio: Cellular Respiration Game
Make sure you know your facts before playing this game! Concepts of cellular respiration are the focal point of the questions. Get them correct and hit the target, or get them wrong and your arrow will flop.
Walter Fendt
Walter Fendt: Refracting Astronomical Telescope
An app for investigating the operation of a refracting telescope. The location of the eyepiece and objective lens can be altered, and the focal point and path of light through the lenses can be observed.
Exploratorium
Exploratorium: Water Sphere Lens
A discussion of how to make a magnifying lens exhibit using a water-filled flask and a light bulb. Consists of assembly instructions and a "To do and notice" section. Great for a teacher demonstration or a student project.
Curated OER
Unesco: Brazil: Historic Town of Ouro Preto
Founded at the end of the 17th century, Ouro Preto (Black Gold) was the focal point of the gold rush and Brazil’s golden age in the 18th century. With the exhaustion of the gold mines in the 19th century, the city’s influence declined...
Curated OER
Wikipedia: Natl Historic Landmarks in Al: Montgomery Union Station and Trainshed
Constructed in 1898, this is an example of late 19th-century commercial architecture. It served as the focal point of transportation into Montgomery. The train shed is significant in that it shows the adaptation of bridge-building...
Curated OER
Wikipedia: National Historic Landmarks in Kansas: Fort Scott
This fort, established in 1842 and abandoned in 1853, served first as a frontier outpost along the "Permanent Indian Frontier", then as a Civil War garrison. During the Civil War, the fort was a major focal point of black troop activity...
Curated OER
Wikipedia: Natl Historic Landmarks in Arkansas: Little Rock Central High School
Focal point of the Little Rock Integration Crisis of 1957.
Curated OER
Wikipedia: National Historic Landmarks in Massachusetts: Springfield Armory
Until 1968 this site was a part of the nation's first armories and weapons production facilities, and a major military research facility. It was a focal point of the 1787 Shays' Rebellion, a local uprising against oppressive state fiscal...
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