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The Scratch patch - substitution cipher

This project, exploring basic encryption, is a useful introduction to data security as well as iterating through strings to manipulate them. The program create a ‘substitution cipher’, one of the most basic forms of encryption. It also demonstrates that, for more complex chained commands, Scratch becomes rather...

The Scratch patch - error handling

This activity is an introduction to writing programs that can handle errors. It also helps students to understand number bases, by guiding them through the writing of a ‘base converter’ program.

CS4FN Issue 8

This issue of Computer Science for Fun is entitled ‘Computer Science in Space’, and explores the role of computers in space exploration and astronomy.

It includes articles covering:

• Computer scientists working for NASA

• GPS and computer art projects that love your data

• Computers,...

STEM learning secondary and FE magazine: summer 2018

This issue of magazine includes the following articles:

  • Preparing BTEC students for university by Adrian Greenall
  • Future careers in magic by Dave Gibbs
  • What does a good science scheme of learning look like? by Mark Langley
  • Exploring our universe by Tom Lyons
  • Moving...

STEM learning secondary and FE magazine: spring 2018

This issue of the magazine includes the following articles:

  • Have your Pi and eat it too by Michael Anderson
  • Bananas are big business by Ed Walsh
  • The E in STEM by Gill Collinson and Gemma Taylor
  • Celebrating International Darwin Day by Simon Quinnell
  • Applying learning...

Data-logging with BBC micro:bits and MakeCode for modelling with Excel and GeoGebra.

Recent developments in MakeCode now make data-capture from micro:bits very simple via the USB cable.  The data can be graphed in real time in MakeCode and exproted as CSV files.  Using tools such as Excel and GeoGebra's Spreadsheet View, the data can be manipulated, analysed and modelled.  With a pair of...

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...

CS4FN Issue 22

This issue of Computer Science for Fun focuses on creative computing. Can a machine even ever be truly creative? After all they are just blindly following their programs. Surely that isn’t what creativity is about! But what do we really mean by creativity? We need to decide if we are to write programs that are...

CS4FN Issue 21

This issue of Computer Science for Fun focuses on the work of scientists and engineers using computers to understand, identify and recreate wild sounds, especially those of birds. We see how computer models help biologists understand animal ...

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...


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