Investigate the makeup and function of genes and genetic code by exploring an actual stretch of human DNA in this activity.

This website describes contents of the Virginia Slave Codes of 1705 with excerpts from the orginal law.

Here is a brief description of Black Codes, which were set in place in Texas in 1866 and "outlined a status for African Americans not too much removed from their earlier condition as slaves."

This article reveals some techniques and vulnerabilities in Unix-based computer networks.

This is a great lesson plan that combines Karoytypes and evolution. Students will recognize that the chromosomes of chimpanzees and humans are remarkably similar, then correlate that to their evolutionary relationship.

Discover how knowledge gained from disasters has influenced changes in safety features and building codes. Describe how codes have been used to try to prevent future loss of property or lives.

The U.S. Gazetteer Files provide a listing of all geographic areas for selected geographic area types. The files include geographic identifier codes, names, area measurements, and representative latitude and longitude coordinates. There...

A detailed description of the Radix sort algorithm, including a code solution written in the C programming language and an interactive animation / visualization of the sort at work.

In this self-guided unit, you will be exploring the themes of justice and injustice. Included are lessons, self-assessments, background information, and learning activities. At the end of the unit, you will follow the research process to...

This fifth unit of a course on Art Appreciation looks at different forms of three-dimensional art. Students learn about sculpture and its history, government-funded art works, and controversy in art. They look at other types of 3-D...

Outlines the political events prior to the Civil War as the United States expanded its territories to include new states and conflicts arose over the issue of slavery.

A set of eight activities that teach students basic computer science concepts using the programming language Scratch. Includes lots of additional supports for teachers. All materials are free and teachers sign in to create a class. This...

A set of eight activities that teach students basic computer science concepts using the programming language Scratch. Includes lots of additional supports for teachers. All materials are free and teachers sign in to create a class. This...

See how DNA is transcribed into RNA and spliced to remove non-coding regions, leaving only the protein-coding regions, called exons. [1:37]

Here is a color-coded family tree to help you understand how the historical characters in Shakespeare's series of history plays are connected. As a bonus, you also get a brief synopsis of each of the plays.

Covers the composition and uses of liming materials in agriculture, as well as the lime codes of several states. Good definitions of terms: lime, calcitic limestone, calcite, dolomite, dolomitic limestone, aragonite, hi-cal lime, and more.

Includes the words to the Pledge of Allegiance with accompanying facts about its history and code of rules that is appropriate for younger students.

Clear explanation of how journal articles tend to be structured, as well as tips for extracting information from each part. Includes sample, color-coded exercises.

This site provides information on American inventors Benjamin Franklin, Robert Fulton, Eli Whitney, Thomas Jefferson, Isaac Singer, Wilbur Wright, Thomas Alva Edison, Elias Howe, and Alexander Graham Bell. It offers pictures from and...

Information about the roles of Native Americans in World War II and their service in the armed forces and defense industries.

Prism Magazine offers an essay on student plagiarism and how to track down if the paper is plagiarized.

Learn all about the binary number system and how to count in binary. Includes a set of practice questions.

PBS provides details on the landmark Supreme Court case of Schechter v. U.S. which dealt with congressional powers under the Commerce Clause.

The binary number system is a perfect fit for the dual-state technologies used in digital computing devices. This lecture series presents a brief description of how the two fit together.