Texas Instruments
Texas Instruments: Numb3 Rs: Coded Messages
Based off of the hit television show NUMB3RS, this lesson uses matrices (inverse and multiplication) to decode messages hidden within digital pictures -- a process known as steganography. This method of hidden communication is known to...
Texas Instruments
Texas Instruments: Numb3 Rs: Breaking the Code
Based off of the hit television show NUMB3RS, this lesson introduced students to simple coding techniques (namely, the shift cipher). Students learn to translate codes from nonsense to English by quantifying each letter, and then...
Other
National Engineers Week Foundation: Hearing the Light
Students learn how laser communication systems are built by observing how sound can be encoded into, and transmitted by a light beam.
Khan Academy
Khan Academy: Simple Image Compression
Lossless single image compression by using the algorithm run-length encoding (RLE).
Wikimedia
Wikipedia: Ascii
A thorough Wikipedia description of the computer character encoding scheme known as ASCII (American Standard Code for Information Interchange).
Wikimedia
Wikipedia: Unicode
A complete Wikipedia description of the computer character encoding scheme known as Unicode.
Braingle
Braingle: Cryptography Brain Teasers
Test your critical thinking skills with a variety of cryptography brain teasers, phrases or expressions "encoded in some way." Solve the teasers provided at this site, and submit your own for others to try!
Science Buddies
Science Buddies: Image Compression vs. Image Quality: Finding the Best Tradeoff
In this project you'll learn about how digital image files are encoded, and how digital images can be compressed so that the files take up less storage space and can be transmitted more quickly. You will also measure the quality of...
Science Buddies
Science Buddies: Image Compression vs. Image Quality: Finding the Best Tradeoff
In this project you'll learn about how digital image files are encoded, and compressed. You will also measure the quality of compressed and uncompressed images, which will give you important insights into the tradeoffs between file size...
Smithsonian Institution
National Museum of the American Indian: Native Words: Code Talking
Learn how members of many Native American tribes became a vital part of America's efforts during World War I and World War II, divising codes that were never broken by the enemy. Includes examples of encoded words.
Texas Education Agency
Texas Gateway: Elements and Compounds
In this fun and engaging online lesson, students differentiate between elements and compounds on the most basic level while having fun "encoding" the Periodic Table.
National Council of Teachers of Mathematics
Nctm: Illuminations: Codes
This is a computer based program that allows students to understand basic cryptography which utilizes transformations of shifting and stretching. Students may encode their own message and see it graphically.
PBS
Pbs Nova: Send a Coded Message Virtual Enigma
Explore the NOVA's Virtual Enigma machine used during WWII. You can send an encrypted message to a friend along with the special key needed to decipher the message. A link is also included to the Virtual Enigma.
Scientific American
Scientific American: What's a Dvd and How Does It Work?
This "Ask the Expert" article answers the question "What's a DVD and how does it work?" clearly and thoroughly. Compares the DVD to other data storage units, and to itself! Did you know there are more types of DVDs other than what you...
Other
Video Over the Internet
An in-depth document on video and the Internet. Including video & Internet-the problem, solutions & technologies in use, video encoding & decoding.
Other
Webopedia: Tape
Resource offers several paragraphs of information on tapes, which are magnetically coated strips of plastic on which data can be encoded.
Other
Beautiful Chemistry: Beautiful Structures: Dna Nanostructures
DNA is the molecule of life, as life's secrets are encoded in DNA. In this interactive activity. we see the famous double helix structure of DNA.
TED Talks
Ted: Ted Ed: Secrets of the X Chromosome
The sequence of DNA that we inherit from our parents encodes directions for making our cells and giving us specific traits. Robin Ball explains how the secret lies in X chromosome inactivation.
Illustrative Mathematics
Illustrative Mathematics: 4.nf How Many Tenths and Hundredths?
Finish the equations to make true statements. The student must really think to encode the quantity in positional notation. Aligns with 4.NF.C.5.
CK-12 Foundation
Ck 12: Life Science: Reproductive Behavior of Animals
[Free Registration/Login may be required to access all resource tools.] Some of the most important animal behaviors involve mating. Mating is the pairing of an adult male and female to produce young. Adults that are most successful at...
Code.org
Code.org: Cs Fundamentals: Happy Maps
The bridge from algorithms to programming can be a short one if students understand the difference between planning out a sequence and encoding that sequence into the appropriate language. This activity will help students gain experience...
Mind Tools
Introducation to Communication Skills
This article reveals the purpose of communication: to get your message across to others. This may seem elementary, but the process that involves both the sender of the message and the receiver is complex and can lead to confusion and...
Other
Data Guru: The Communication Process
This communication tutorial focuses on online communication in which interpretation can lead to conflict.
Texas Instruments
Texas Instruments: Numb3 Rs: How Hard Can It Be?
Based off of the hit television show NUMB3RS, this lesson introduces students to one way of defining the strength of an encryption (called "Entropy"). In the lesson, students learn how to calculate the entropy of a given code, and then...
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