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Modems unplugged - sound representation

All data on computers is stored and transmitted using the binary number system. When the binary digits need to be sent over the phone lines (which often happens in home internet connections), the digits are converted to sound and decoded at the other end using a modem. This activity uses audio coding similar...

Crazy Character Algorithms Activity: an Introduction to Sequences of Instructions

Children in lower primary settings can create their first algorithm using this Barefoot Computing unplugged computing activity. A picture of a 'crazy character' is decomposed into simple shapes. The instructions for drawing it are shared with the class who follow and attempt to reconstruct the picture. This...

Introduction to sound and music computing

A highly technical overview of how sound is represented in a computer, how digitising sound changes the quality of it and how reducing the sample rates can effect the resulting audio. The resource also comes with a number of sound samples to illustrate these concepts, along with both Python and Scratch programs to...

Bitmap canvas editor in Excel

Although this resource does not contain any instructions for how to use it in a lesson, or lesson plans to go with it, it could easily be used to support the delivery of other activities as students learn about how images are created and stored, as well as how they are represented in the memory of a computer....

FETCH-DECODE-EXECUTE Board Game

This game teaches students how instructions and data move from RAM to the CPU and internally between the various registers and the ALU in order to run a simple program (which takes 2 numbers, adds them and stroes the result in memory).

A-Level students have fed back that it really helped them in the exam...

Case Study for Information Security

There does seem to be a shortage of good case studies (fictional or real) that are deailed enough to be useful but not overly-complex for level-3 students. I ended up creating my own case study based on a company I used to work for and similar companies I have worked with. I hope you find it useful.

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