The 41 slides in a professional development seminar model how to use close reading techniques to examine the many layers of F. Scott Fitzgerald's The Great Gatsby. In addition to passages from the novel, slides provide biographical...

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...

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...

Learn how compressed formats such as zip, gzip, or gif images are all based on a method called Ziv-Lempel coding, which turns out to be an interesting exercise in finding patterns in text.

Compare the strengths and weaknesses of different digital image formats. How does the amount of compression affect a JPEG image? What happens when you save a JPEG image multiple times?

Here's a project that involves a different kind of sandbox than the ones you usually think of. This one has a moving wall inside, acting like a piston, to compress the sand. You can make layers using two different colors of sand, and...

Do you love to listen to your MP3 player while you're exercising, or listen to songs on the Internet? The relatively recent development of MP3 technology has made it possible to take a stack of CD's and store them on a device no bigger...

Students learn about nanocomposites, compression and strain as they design and program robots that compress materials. Student groups conduct experiments to determine how many LEGO MINDSTORMS NXT motor rotations it takes to compress soft...

Students explore how tension and compression forces act on three different bridge types. Using sponges, cardboard and string, they create models of beam, arch and suspension bridges and apply forces to understand how they disperse or...

Practice using lossless text and image compression algorithms and considering what data can be compressed most easily.

Check your understanding of lossy and lossless compression techniques, in this set of free practice questions designed for AP Computer Science Principles students.

Computers represent all data in binary, so all types of files, from text to images to videos, are ultimately sequences of bits. Regardless of whether the bits represent a document or a GIF, computers can use a bit compression technique...

Lossless text compression is discussed.

Lossless single image compression by using the algorithm run-length encoding (RLE).

Using Lossy Compression to reduce a file size.

Here's a project for studying compression waves in different soil types. It uses a homemade wave tank for solids, with a frequency generator, amplifier, and loudspeaker as the vibration source. There are lots of interesting possibilities...

A very informative article about the process of video compression for the web.

Determine the internal energy in a sample of gas that goes through an isothermal compression.

Use this site to learn about basic gas properties including motion, viscosity, and compressibility. Includes links to activities for all ages.

Through inquiry, learners will use various objects/materials attached to strings to investigate how vibration causes sounds waves.

Did you ever notice the cool patterns around your footprints when you take a walk in the wet sand at the beach? The pressure of your feet has effects far outside your footprints. Here's a project that uses a simple experimental apparatus...

Middle schoolers are presented with a brief history of bridges as they learn about the three main bridge types: beam, arch and suspension. They are introduced to two natural forces - tension and compression - common to all bridges and...

[Free Registration/Login Required] Abridged from the full text located at the Gilder Lehrman Institute of American History, this passage provides information about the development of the transcontinental railroad. Paired texts, a text...

Explore the particle model of matter. Run the simulations and see if you can predict the results.