### 1 |

**Page** | **Section** |

100 Doors (method for finding squares) | JavaScript |

3D Animation example | HTML |

### A |

**Page** | **Section** |

Abacus (binary, octal and hexadecimal) | Mathematics |

About this site | - |

Abundant, Deficient or Perfect Number? | Mathematics |

Access Tips | Databases |

Access databases and web-pages | JavaScript |

Active Server Pages and ASP.NET | JavaScript |

Addition - Binary | Mathematics |

Algorithms - Sorting | Algorithms |

Algorithms - Searching | Algorithms |

AND operator | Mathematics |

AND() in Excel | MS Office |

Angles - estimating | Mathematics |

Animation (on web-pages) | HTML |

Appointment clashes in Access | Databases |

Arrays | Programming |

Arrays for Reference/Selection | Blog |

ASCII Codes and Unicode | Representation |

ASCII Art Generator | Representation |

ASP | JavaScript |

### B |

**Page** | **Section** |

Bases (number) | Mathematics |

BASIC - Visual | VisualBASIC |

BASIC programming for beginners | Programming |

Binary (theory) | Mathematics |

Binary (interactive) | Mathematics |

Binary (fractions and negative numbers) | Mathematics |

Binary (normalised floating-point) | Mathematics |

Binary Addition | Mathematics |

Binary Breakout Game | Revision |

Binary Breakout Options | - |

Binary Counter (also useful for truth tables) | Mathematics |

Binary Flags | Mathematics |

Binary to Hexadecimal Conversion | Mathematics |

Bitmaps - storage | Representation |

Bitwise logic (theory) | Mathematics |

Bitwise logic (interactive) | Mathematics |

Bits, bytes and words | Mathematics |

Blog Index | Blog |

Body Mass Index | JavaScript |

Bookings database | Databases |

Boolean logic (theory) | Mathematics |

Boolean logic (interactive) | Mathematics |

Breaks - page and section | MS Office |

Bubble Sort game | Algorithms |

Buttons in Excel | MS Office |

### C |

**Page** | **Section** |

Caesar shift ciphers | Representation |

Card Flip Magic (parity "trick") | JavaScript |

Card Flip Magic - with digits | JavaScript |

Card Trick (sorting / AQA programming project) | Algorithms |

Card Trick (JavaScript image-switching example) | JavaScript |

Cell Protection in Excel | MS Office |

Character representation | Representation |

Checkboxes in Excel | MS Office |

Circular Motion / Rotation (programming example) | - |

Clashing appointments (Access) | Databases |

Client-side scripting | JavaScript |

Colours (HSL) in HTML | Representation |

Colours (RGB) in HTML | Representation |

Coins (adding activity) | Mathematics |

Coins (JavaScript example) | JavaScript |

Complements (e.g. for negative numbers) | Mathematics |

Compound keys (in databases) | Databases |

Compression - Huffman Coding and RLE | Representation |

Computer Studies - O level resources from 1983-5 | Teachers |

Computing - National Curriculum | Teachers |

Concept Map for the Computing curriculum | Teachers |

Computing Resources Database (from other sites) | - |

Conditional formatting (in Excel) | MS Office |

Connect 4 (programming example) | JavaScript |

Connecting Wall (revision game) | Revision |

Constants | Programming |

Contact | - |

Contents Tables in Word | MS Office |

Convert Text to Table... | MS Office |

Converting between number bases | Mathematics |

Cookies | JavaScript |

### D |

**Page** | **Section** |

Databases and web-pages | JavaScript |

Dates in Excel | MS Office |

Decipher Substitution Ciphers | Representation |

De Morgans Laws | Mathematics |

Deficient, Perfect or Abundant Number? | Mathematics |

Degree of relationship | Databases |

Denary | Mathematics |

Dice Frequency Modelling | JavaScript |

Die Model (programming/animation example) | - |

Double-bookings in Access | Databases |

Duality (in Boolean Logic) | Mathematics |

### E |

**Page** | **Section** |

Editing macros (in Excel) | MS Office |

Encryption - substitution ciphers | Representation |

Enigma simulator | JavaScript |

Estimating angles | Mathematics |

Estimating pi (the Monte Carlo method) | Mathematics |

EU Games system (Excel macro example) | MS Office |

Events in Excel | MS Office |

Evidence-based teaching and learning | Teachers |

Excel macros | MS Office |

Examples of Python programming techniques | Programming |

Excel tips | MS Office |

Excel - form features | MS Office |

Excel - if() | MS Office |

Excel - logical operators | MS Office |

Excel - numerical functions | MS Office |

Excel - protection | MS Office |

Excel - Paste Special | MS Office |

Excel - text functions | MS Office |

Excel - validation | MS Office |

Excel - vlookup() | MS Office |

Exclusive-OR operator | Mathematics |

### F |

**Page** | **Section** |

Factors (visualising squares and prime numbers) | Mathematics |

Factors - Abundant, Deficient or Perfect Number? | Mathematics |

Field, database | Databases |

Fields in Word | MS Office |

First normal form | Databases |

Floating-point binary | Mathematics |

Flood Fill game (and recursive method) | Algorithms |

Foreign key | Databases |

Forms in Excel | MS Office |

Fruit machine in Access | Databases |

### G |

**Page** | **Section** |

Game Show - the Monty Hall problem | JavaScript |

GCSE Computing resources | Teachers |

GCSE Connecting Wall revision game | - |

GCSE Long Answer Questions | Teachers |

GCSE revision game - Computing Worderama | Revision |

GCSE Revision links | Revision |

### H |

**Page** | **Section** |

Hexadecimal (theory) | Mathematics |

Hexadecimal (interactive) | Mathematics |

Hexadecimal to Binary Conversion | Mathematics |

Home | Home |

Describing colour using HSL | Representation |

HTML | HTML |

Huffman Coding (compression) | Representation |

Hyperlinks (in HTML) | HTML |

### I |

**Page** | **Section** |

if() in Excel | MS Office |

if in VBA | MS Office |

Image dimensions (the Metadator!) | Representation |

Images - what the data represents | Representation |

Images (in HTML) | HTML |

Images and wrapping (in Word) | MS Office |

Impact of technology | Teachers |

Index, database | Databases |

Insertion Sort game | Algorithms |

Interactive sorting game (The Sorting Balance) | Algorithms |

Iteration vs. recursion | Programming |

### J |

**Page** | **Section** |

JavaScript | JavaScript |

JavaScript examples | - |

Just Basic programming | Programming |

### K |

**Page** | **Section** |

Key field | Databases |

KS3 Computing resources | Teachers |

### L |

**Page** | **Section** |

Learning - psychology | Teachers |

Learning to program | Programming |

Less Is More | Blog |

Library system in Access | Databases |

Library system in Excel | MS Office |

Links (in HTML) | HTML |

Links (to other sites) | Teachers |

Logic | Mathematics |

Logic circuits / gates | Mathematics |

Logical operators in Excel | MS Office |

Long Answer Questions (for GCSE) | Teachers |

Lottery (JavaScript) | JavaScript |

### M |

**Page** | **Section** |

Macros in Excel | MS Office |

Mail merge in Word | MS Office |

Masking bits (bitwise logic) | Mathematics |

Mathematical (Boolean) logic | Mathematics |

Medals table in Excel | MS Office |

Merge Sort game | Algorithms |

Merits database example | Databases |

Metadata - images without dimensions | Representation |

Microsoft Excel | MS Office |

Microsoft Office | MS Office |

Microsoft Powerpoint | MS Office |

Microsoft Publisher | MS Office |

Microsoft Word | MS Office |

MIDI files | Representation |

Mind Reader (image-switching example) | JavaScript |

Modular Arithmetic | Blog |

Monte Carlo method | Mathematics |

Movement in programs | Representation |

msgbox() in Excel macros | MS Office |

Multiplication Tables practice | Mathematics |

### N |

**Page** | **Section** |

NAND operator | Mathematics |

National Curriculum Computing | Teachers |

Normalisation (binary) | Mathematics |

Normalisation (databases) | Databases |

NOR operator | Mathematics |

NOT operator | Mathematics |

Noughts and Crosses (algorithm example) | Algorithms |

Number bases | Mathematics |

### O |

**Page** | **Section** |

O level Computer Studies resources from 1983-5 | Teachers |

OCR Coding Challenges - sample solutions | Programming |

OR operator | Mathematics |

OR() in Excel | MS Office |

### P |

**Page** | **Section** |

Page breaks in Word | MS Office |

Paste Special (in Excel) | MS Office |

Perfect, Abundant or Deficient Number? | Mathematics |

PHP | JavaScript |

PowerPoint | MS Office |

Presence check validation | Databases |

Preventing double-bookings in Access | Databases |

Primary key (field) | Databases |

Prime Numbers - visual investigation | Mathematics |

Prime Numbers - Sieve of Eratosthenes | Mathematics |

Programming concepts and techniques | Programming |

Programming examples - BASIC | Programming |

Programming examples - JavaScript | Programming |

Programming examples - Python (file) | Programming |

Programming examples - Python (links to replit.com) | Programming |

Programming practice tasks (e.g. for GCSE students) | Programming |

Programming tasks for beginners | Programming |

Programming - Top Ten Techniques | Blog |

Programs - how are they stored inside the computer? | Representation |

Psychology of learning | Teachers |

Publisher | MS Office |

Puzzle | JavaScript |

Python programming examples | Programming |

### Q |

**Page** | **Section** |

Queries, database | Databases |

### R |

**Page** | **Section** |

Radio buttons in Excel | MS Office |

Random numbers in Excel | MS Office |

Random numbers in programming | Mathematics |

Range of binary values | Mathematics |

Range validation | Databases |

Record, database | Databases |

Recording macros | MS Office |

Rectangle Numbers | Mathematics |

Recursion vs. iteration | Programming |

Describing colours using RGB | Representation |

Referential integrity | Databases |

Relational database | Databases |

Representation of images - why you need to know | Representation |

Representation of programs | Representation |

Representation of sound | Representation |

Resources Database (from other sites) | - |

Revision Game - Connecting Wall | Revision |

Revision links for GCSE | Revision |

Room Bookings database | Databases |

Rotation / Circular Motion (programming example) | - |

Rounding in Excel | MS Office |

Run-Length Encoding (compression) | Representation |

### S |

**Page** | **Section** |

Sample systems in Excel | MS Office |

Sampling sound - frequency and sample size | Representation |

Santas and Puddings (seasonal noughts and crosses) | Algorithms |

Scope of variables | Programming |

Scripting | JavaScript |

Searching algorithms | Algorithms |

Second normal form | Databases |

Section breaks in Word | MS Office |

Selection with Arrays | Blog |

Server-side scripting | JavaScript |

Seven-Segment Display (programming example) | - |

Shifting bits (in binary) | Mathematics |

Sieve of Eratosthenes | Mathematics |

Simon game (programming example) | - |

Slowness (In Praise of) | Blog |

Sorting algorithms | Algorithms |

Sound - representation | Representation |

Sorting game (The Sorting Balance) | Algorithms |

SQL Injection (activity) | Databases |

Square Numbers | Mathematics |

Standard Form | Mathematics |

Standard Paragraphs | VisualBASIC |

Static variables (see Scope) | Programming |

Stock control database | Databases |

Stopclock (CSS example - no coding) | HTML |

Storage of Text | Representation |

Structure, database | Databases |

Subforms in Access | Databases |

Substitution ciphers | Representation |

Sudoku solver (programming example) | Algorithms |

### T |

**Page** | **Section** |

Table, database | Databases |

Tables in Word | MS Office |

Tables of Contents in Word | MS Office |

Tags (inserting in HTML) | HTML |

Tags, common | HTML |

Teaching effectively | Teachers |

Technology and its impact | Teachers |

Text manipulation in Excel | MS Office |

Text - storage | Representation |

Third normal form | Databases |

Times Tables - array-based practice | Mathematics |

Top Ten Programming Techniques | Blog |

Top Trumps (client-side scripting example) | - |

Top Trumps - classic computers | - |

Traffic light (JavaScript programming example) | - |

Translucency | HTML |

Transparency | HTML |

Trigonometry - visualising sines and cosines | Mathematics |

Truth tables | Mathematics |

Type, database field | Databases |

Type, variable | Programming |

### U |

**Page** | **Section** |

Unicode and ASCII codes | Representation |

Unique key (field) | Databases |

Unique validation | Databases |

### V |

**Page** | **Section** |

Validation, database | Databases |

Validation, Excel | MS Office |

Variables | Programming |

VBA in Excel | MS Office |

Vector graphics | Representation |

Video shop system in Access | Databases |

Visualising factors, squares and primes | Mathematics |

Visualising multiplication | Mathematics |

vlookup() in Excel | MS Office |

### W |

**Page** | **Section** |

Web-page creation | HTML |

Web-pages and databases | JavaScript |

Why are you teaching that? | Blog |

Words of Wisdom | JavaScript |

Word (Microsoft) | MS Office |

Worderama (normal version) - interactive word game | Revision |

Worderama (Computing version) - Wordle meets Computer Science | Revision |

Wrapping around images in Word | MS Office |