🛠️ jsfun Tools

Free classroom tools for computing and general teaching — built to make learning more engaging.

🚀 ReadySetCompute

🐍 Python Display Tool

Python Code Display

Display, download (.py or .txt), visualise and make puzzles from any raw Python file. Paste a GitHub Gist or Pastebin URL.

iGCSE / A-Level 🧩

Parsons Puzzle (Reorder)

Reorder scrambled lines of code back into the correct order. Works with any raw Python URL (up to 20 lines).

iGCSE / A-Level

🧒 Early Years & Primary Computing

AmberJr — ScratchJr Prep Tool

Create, edit and customise ScratchJr projects for class — add custom characters, backgrounds and sounds with a drag-and-drop scene editor. By Sethi De Clercq.

EYFS / KS1 🔐

Secret Code Generator

Create and crack secret codes and ciphers — a hands-on introduction to cryptography for young learners. Message Centre friendly. By Sethi De Clercq.

EYFS / KS1 / KS2 🎨

Pixel Art Creator

Create pixel art on 8×8, 16×16 or 32×32 grids — introduces digital art, coordinates and grids. Export to PDF. By Sethi De Clercq.

EYFS / KS1 / KS2 🖌️

No-frills drawing tool for young learners — brush/eraser modes, adjustable sizes, and simple colour palette. Save as PNG. By Sethi De Clercq.

📚 iGCSE Algorithms

Calculate the average of a list of numbers.

Classic bubble sort algorithm implementation.

Counting algorithm — tallying occurrences.

A definite iteration example using a for loop.

Selection — branching logic with if/else.

Search through a list one item at a time.

Find the maximum and minimum in a list.

Post-condition loop (repeat…until style).

Running total / accumulator pattern.

Pre-condition indefinite iteration with while.

0️⃣ Binary & Data

Space-themed binary game with 4 difficulty levels (Rookie → Insane) and 3 game modes: Unsigned, Two's Complement and Hexadecimal.

KS3 / iGCSE 🔢

Binary Conversion Tool

Convert between decimal and binary step by step.

KS3 / iGCSE ❓

Test binary conversion knowledge with a quiz.

KS3 / iGCSE ⏱️

Binary Timed Challenge

Race against the clock on binary conversions. By Sethi De Clercq.

KS3 / iGCSE 💡

8-bit Binary Display

Visual 8-bit binary bulb display. By Sethi De Clercq.

KS3 / iGCSE 🔀

Decimal → Binary Tool

Step-by-step decimal to binary conversion. By Sethi De Clercq.

KS3 / iGCSE ✅

Understand how parity bits detect errors in data transmission.

Snake game with a binary challenge twist.

KS3 / iGCSE 📁

File Size Calculator

Calculate file sizes for iGCSE questions. Student created.

💎 Diamond 9 — CS Topics

Computer Networks Components

Routers, Switches, Firewalls, NICs, Cables, Modems, Bridges, Gateways, Repeaters

Cybersecurity Threats

Phishing, Malware, Social Engineering, Ransomware, DDoS, Physical, Spyware, Adware, Keyloggers

Ethical Issues in Computing

Privacy, Security, Property, Divide, Automation, Open Source, Transparency, Accountability, Consent

iGCSE / A-Level 🖥️

Hardware Components

CPU, RAM, Storage, Motherboard, Power Supply, Peripherals, Monitor, Keyboard, Mouse

KS3 / iGCSE 🧠

Sorting, Searching, Graph, Dynamic, Greedy, Recursion, Tree, Backtracking, Hashing

Programming Concepts

Variables, Functions, Loops, Algorithms, Objects, Syntax, Data, Pseudocode, Operators

Programming Paradigms

OOP, Procedural, Functional, Event-Driven, Logic, Declarative, Imperative, Concurrent, Aspect-Oriented

Requirements, Design, Implementation, Testing, Deployment, Maintenance, Planning, Review, Closure

iGCSE / A-Level 🧪

Types of Software Testing

Unit, Integration, System, UAT, Regression, Alpha, Beta, Load, Stress

iGCSE / A-Level

🔺 Priority Triangle — CS Topics

Security · Privacy · Encryption

Scalability · Performance · Cost

Ethics · Bias · Responsibility

iGCSE / A-Level 🗄️

Data · Storage · Integrity

AI · Automation · Intelligence

A-Level 👁️

Privacy · Consent · Tracking

Accessibility · Usability · Inclusion

iGCSE / A-Level 🌱

Sustainability · Energy · Efficiency

iGCSE / A-Level 🦹

Cybercrime · Fraud · Phishing

Open Source · Collaboration · Transparency

Digital Divide · Access · Education

iGCSE / A-Level 🧮

Algorithms · Optimization · Complexity

Networking · Bandwidth · Connectivity

🔗 Link Two Sides — CS Quizzes

Programming Constructs

Match: For loop, If statement, While loop, Else statement to their definitions.

Match AND, OR, NOR, XOR gates to their truth-table descriptions.

Match RAM, Hard Disk, USB Flash Drive, Optical Disc to their descriptions.

Networking Concepts

Match IP Address, TCP/IP, Router, Server to their descriptions.

Algorithm Basics

Match Algorithm, Flowchart, Array, Decision to their descriptions.

Pseudocode Statements

Match FOR, totalling, WHILE, REPEAT to their pseudocode descriptions.

Programming Concepts

Match Library routine, Structure diagram, Procedure, Function to their definitions.

Program Development Life Cycle

Match Design, Testing, Analysis, Coding to their PDLC stage descriptions.

Pseudocode Keywords

Match WRITE, READ, OUTPUT, INPUT to their pseudocode actions.

Match INTEGER, CHAR, STRING, REAL to their definitions.

🐱 Scratch Projects

Interactive Caesar cipher / substitution cipher wheel in Scratch.

Von Neumann Architecture

Visual model of the Von Neumann computer architecture.

Right Hand Rule

Maze-solving using the right-hand rule algorithm.

🧗 Challenges

Python Challenges

A collection of Python programming challenges. Entries are for GIS students only but challenges are open to all.

KS3 – A-Level 🗼

Towers of Hanoi

Classic recursive problem in an interactive visual format. By Sethi De Clercq.

iGCSE / A-Level 📊

Spreadsheet cell reference game — surprisingly addictive! Builds data literacy skills.

❓ Question Tools

Draw lines between matching items — a very common exam question type. Customisable with your own content.

Sentence Ordering Quiz

Order scrambled words, sentences or processes. Answers are encrypted so students can't guess from the URL.

All ages ⚖️

More Than / Less Than

Comparison tool for numerical reasoning. By Sethi De Clercq.

🎰 Choosers & Pickers

3D Lollipop Carousel

Choose random names, groups or questions with a beautiful 3D spinning carousel.

Spin the wheel to choose from large groups of names — perfect for bigger classes.

Presentation Spinner

Get two students presenting at once — great for peer assessment activities.

Draggable Manipulatives

Drag and drop items for categorisation or grouping activities on a whiteboard.

Number Flash Cards

Random number flash card generator. By Sethi De Clercq.

Primary / KS3 🗳️

Pick a classroom debate topic and assign sides randomly.

💬 Discussion Tools

Priority Triangle

Which concept is most important? Editable words, dictionary look-up and image search built in.

ThinkRank Studio

Full ranking suite — Diamond 9, Diamond 5, Triangle, Line ranking, Podium and Elimination mode.

All ages 🎙️

Structure and run a classroom debate with this simple tool.

🖼️ Image Tools

Tile Reveal Game

Reveal tiles one by one — who can guess the hidden image first? Great as a starter activity.

Image Reveal Spotlight

Spotlight effect to slowly explore an image. Wonderful for younger children investigating a visual stimulus.

Primary / KS3 🔍

Overlay two images to compare them — great for Now & Then, or just "which do you prefer?"

🔢 Primary Maths

Visual ten frames with 4 coloured counters. Choose 1 or 2 frames, horizontal or vertical. Toggle running totals on/off. By Sethi De Clercq.

EYFS / KS1 🔵

Part-Whole Challenges

Interactive part-whole model tool — visually explore fractions, addition and subtraction. Numbers up to 10, 20 or 50. By Sethi De Clercq.

EYFS / KS1 🔍

Missing Number Grids

5×5 or 10×10 grids with missing numbers for students to fill in. Export to PDF for printing. By Sethi De Clercq.

✍️ Word & Literacy

Ice Maze — Sentence Builder

Navigate a maze collecting words in the right order to build sentences. Uses the Colourful Semantics approach — 8 progressive stages from simple to complex.

KS1 / KS2 ☁️

Quickly generate a word cloud from any text. Great for summarising themes in a text.

All ages 🏷️

Word Type Highlighter

Highlight nouns, verbs, adjectives and more with school colour codes. Build grammar awareness for young learners. By Sethi De Clercq.

Word Search Maker

Create custom word searches with your own word list. Multiple grid sizes, upper/lower case support, printable. By Sethi De Clercq.

KS1 / KS2 🖊️

Blackout Poetry Creator

Upload any text and use highlighting tools to create blackout poetry. Share or export your creations. By Sethi De Clercq.

KS2 / KS3 ✏️

Fun Writing Adventures

Distraction-free writing tool for young learners to practise typing and build writing confidence. Export as a clean document. By Sethi De Clercq.

EYFS / KS1 🎲

Generate story prompts and story net images. Even saves images for you!

Primary / KS3 📖

Plot Device Chooser

Scratch-based story plot device generator for creative writing inspiration.

🎨 Primary Creative & Fun

Pixel Art Creator

Create pixel art on 8×8, 16×16 or 32×32 grids. Introduces coordinates and digital art. Export to PDF. By Sethi De Clercq.

EYFS / KS1 / KS2 🖌️

Simple drawing tool with brush/eraser, adjustable sizes and basic colours. Save as PNG. By Sethi De Clercq.

EYFS / KS1 🎂

How Many Sleeps?

Count down to birthdays and special events in days, sleeps or hours. Add names and dates, upload via CSV. By Sethi De Clercq.

EYFS / KS1 😊

Emoji Search & Sheet Coder

Search emojis, get Unicode values and Google Sheets / Excel formulas. Click to copy. By Sethi De Clercq.

⏰ Productivity

Countdown timer with an end-of-time chime. Set minutes and seconds. Clean, minimal design for any whiteboard. By Sethi De Clercq.

Classic 25/5 focus timer to help students manage their work time. Student created.

Supply & Demand

Interactive supply and demand curve display tool.