Find out about the Native Americans who used their tribal languages as code during World War I and World War II. Includes information on Charles Chibitty, a Comanche code talker who was inducted into the Pentagon's Hall of Heroes.

Discusses the Black Codes that white Southerners imposed on African Americans after the Civil War and the efforts by Republican politicians to protect their rights.

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

An English translation of the Code of Hammurabi.

Get details on this ancient Babylonian Law code written in 1754 BC. This document, which coined the term "an eye for an eye," is one of the oldest, longest writings that have been discovered and transcribed.

Students will practice debugging in the "collector" environment. Students will get to practice reading and editing code to fix puzzles with simple algorithms, loops and nested loops.

Under the heading, "Cracking the Code of Faraway Worlds" this site explores the uses of spectrum (and spectrograph, spectra) in planetary study. In addition to an image, a description of spectrum and its uses in space science is provided.

Learn how to use refactoring to improve computer code.

Read a passage about early experiments on the genetic code and answer the follow-up questions.

[Free Registration/Login Required] One of the most important code systems invented is the internationally-recognized Morse code, which matches dots and dashes to letters of the alphabet. This revolutionized communication by sending...

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."

Teaches basic computer science concepts using the programming language Scratch. In this activity, students use characters from Cartoon Network's "The Amazing World of Gumball" to create an animated story.

In this activity, students work in small groups to construct a tower that will support a book using everyday materials. The goal is to develop persistence in continuing with a task even when experiencing some failures. This is modeled...

Draco's Code of Law was the first written set of laws and are noted for their barbarity. Peruse some of the laws in this summary that explains why they were needed and how they were eventually modified. A bibliography is included for...

CodeChef provides a platform for computer programmers to practice their skills through posted problems where users can submit their solutions in the language of their choice. They can also interact with a community of fellow programmers...

This lesson helps students learn to think critically about the user information that some websites request or require. Students learn the difference between private information and personal information and distinguishing what is safe and...

This article reviews advances made by medical researchers since the complete mapping of the human genetic code ten years earlier. Although the expectation then had been that cures could be found for many diseases based on this new...

A reintroduction to loops, using the set of "robot" programming instructions. Students will develop critical thinking skills by looking for patterns of repetition in the movements of classmates and determining how to simplify those...

Try the Computer Science Discoveries unit that introduces web design.

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

Code-switching is the action of changing your language, behavior, or appearance based on who you're with or where you are. In this lesson, students will apply the idea of code-switching to how they use phones and other devices in and...

Describes the structure and coding of DNA, how it replicates, and the role it plays at the cellular level. Looks at past and current research on DNA, and applications of this research. (Published: September 25, 2010)

An exhaustive look at the Signal Corps, the legislation behind its formation, and its many uses during the Civil War. Find the equipment used, the code for the signal flags, and pictures of the troops. This is a very detailed and...

A learning exercise and comprehensive notes discussing how DNA controls protein synthesis by means of a base code.