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Twenty Guesses - Information Theory

This resource asks the question ‘How much information is there in a thousand page book?’ It continues by exploring how to estimate how much space is needed to store the information and introduces a way of measuring information content. The resource begins by discussing what is meant by information and how amounts...

Card Flip Magic - Error Detection

When data is stored on a disk or transmitted from one computer to another, it is usually assumed that it doesn’t get changed in the process. But sometimes things go wrong and the data is changed accidentally. This activity uses a magic trick to show how to detect when data has been corrupted, and how to correct it...

You Can Say That Again! - Text Compression

Computers only have a limited amount of space to hold information, so they need to represent information as efficiently as possible. This is called compression. By coding data before it is stored, and decoding it when it is retrieved, the computer can store more data, or send it faster through the Internet. This...

Variables Unplugged

This activity away from the computer is from the Barefoot Computing project. It is intended to provide a theoretical understanding of why and how variables are used in computer programming, using the example of score-keeping in a classroom quiz. Involving several volunteers from the group, the activity uses...

Scratch Maths Quiz Variables

This Barefoot Computing resource builds on the ‘Maths quiz with selection’ learning activities which should be undertaken first.

It involves improving an existing Scratch maths quiz and adding score-keeping using variables – a quiz Scratch file is provided for students who do not have access to one they made...

Sorting algorithm software (bubble, insertion and quick sorts)

This resource includes two lessons on sorting algorithms along with a piece of software to allow students to investigate how these algorithms function. The software itself is a simple game where students perform a given sorting algorithm on a set of data, and lose lives if they perform an incorrect step. The lesson...

Algorithms student booklet

This booklet contains a number of very briefly described algorithms, which students are then expected to analyse, develop an algorithm for and then implement in a language of their choice. Each section contains success descriptors at three different levels which could be adapted to meet the requirements of an...

An introduction to computer science: algorithms in everyday life

This resource consists of a ten page student workbook and some associated resources. The workbook is designed to be used with Key Stage 3 students over a number of lessons, to introduce them to the concept of algorithms, to make them used to following instructions given as an algorithm and to start producing their...

Computing curriculum: projects for students in Years 7 - 9

This booklet is an example of a programme of study for ICT and Computing produced by Matt Britland. The programme contains details of the ICT strands and aims and fourteen original projects for students in years 7-9. Each project includes a link to a presentation that can be used by teachers and by students. The...

Graph paper programming

The video explains the purpose of the activity which is to help students understand the principles behind coding. This is an unplugged activity meaning that students understand the computing principles without the use of a computer. By programming one another to draw pictures, students begin to understand what...

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