Other
Kid Citizen: Congress and Child Labor
Congress is made up of a group of people who work together to improve the quality of lives of citizens throughout the nation. Long ago Congress decided that it was important to pass labor laws to protect children. Why did they think that...
Georgia State University
Georgia State University: Hyper Physics: Crossed Polarizers
At this univeristy physics department site, the polarization of light is explained and illustrated. Methods for analyzing light to determine the degree of polarization are stated and explained with equations.
TeachEngineering
Teach Engineering: Make That Invisible! Refractive Index Matching
Students determine the refractive index of a liquid with a simple technique using a semi-circular hollow block. Then they predict the refractive index of a material (a Pyrex glass tube) by matching it with the known refractive index of a...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Bending Light
Manipulate variables and measure angles as light is refracted in this interactive simulation.
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Bending Light
Explore bending of light between two media with different indices of refraction. See how changing from air to water to glass changes the bending angle. Play with prisms of different shapes and make rainbows.
TeachEngineering
Teach Engineering: When Silicon Talks
In this activity, students tackle this aspect of engineering as they solve problems for precise angles and speeds, and predict data output when samples are altered.
University of Texas at Austin
University of Texas: Zapatistas Document Collection
This collection of documents, broadsides, pamphlets, books and magazines reflects the progress if the Zapatistas to get the government to pass into law a negotiated agreement safeguarding their lands and culture.
PBS
Pbs Learning Media: The Lowdown: Gun Violence, Gun Control, Gun Rights: Where We Go From Here Lesson Plan
While tragic mass shootings like the ones in Las Vegas and Orlando shine a spotlight on our nation's lax gun laws, these horrific events make up a tiny percentage of U.S. gun deaths. Suicide, other types of homicide and accidents play a...
Better Lesson
Better Lesson: Avoiding Plagiarism and Citing Sources
In this scaffolded lesson, students engage in practice with determining whether or not research has been plagiarized. A short video demonstration is included. [03:44] This lesson addresses all three College and Career Readiness Standards...
Cosmo Learning
Cosmo Learning: Physics Iii: Vibrations and Waves
A collection of video lectures from a physics course focusing on vibration and waves taught at the Massachusetts Institute of Technology. The course overviews topics dealing with mechanical vibration and waves with twenty-three lectures....
Curated OER
Educational Technology Clearinghouse: Clip Art Etc: Henry Ii
Henry II of England (5 March 1133 - 6 July 1189) ruled as King of England (1154-1189). Henry was the first of the House of Plantagenet to rule England and was the great-grandson of William the Conqueror. Like his grandfather, Henry I of...