## Listing all results (213)

### 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.

### Where Would You Photograph? (7-11)

In this activity children take on the role of Earth observation scientists submitting a request for an image they would like for their research. This gives them the opportunity to consider the possibilities of pictures taken from orbit (and the limitations) and to write scientifically for a specific audience. It...

### Where Would You Photograph? (14-16)

In this activity students take on the role of Earth observation scientists submitting a request for an image they would like for their research. This gives them the opportunity to consider the possibilities of pictures taken from orbit (and the limitations) and to write scientifically for a specific audience. It...

### Seeing Temperatures

This activity allows students to investigate how images are produced from data streams by using first a spreadsheet and then an image-processing program. They then go on to see how the usefulness of such a monochromatic image may be enhanced by using lookup tables and calibration. The materials used focus on the...

### The Safety Deposit Vault

This is an exercise with complex spreadsheets and mail-merged documents. It is based on an actual implementation in a vaut with over 1500 boxes of different sizes.

The simplified example uses nine boxes of three different sizes, each has the price for annual box rental.

Also recorded are the renters'...

### Code and Decode

How to send secret messages to your friends.

Contains full teacher instructions. Uses Basic programming language.

Pupils shoud have completed the Introduction To Computer Programming

### Compute Whole Number Pythagoras Triangles

An exercise to compute whole nu,mber Pythagorean triangles.

The project uses the Basic programming language.

Pupils should have completed the exercise Introduction To Computer Programming

### EV3 Activities for the Busy Teacher

This sample of a teacher guide introduces basic robotics using Lego EV3 hardware and software – the activities are based upon a single robot model which can be constructed from the education core set.

Students learn about basic movement of the robot rover in the context of space exploration.This context...

### 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,...