Welcome!

I am a high school maths teacher in Australia. This site hosts free web apps I have created to help my students learn mathematics. If you have any requests for additional apps, or find any bugs, please email me at the address at the bottom of the page.

Everything here is free for non-commercial use, though please attribute if you reuse or share :-)

Year 9

Scientific Notation Converter

Turn big or small numbers into scientific notation!

Pythag and Trig Problem Generator

Practice Pythagoras and trigonometry problems!

General Mathematics

Linear Equation Word Problem Generator

Creates random problems and shows the solutions.

Matrix Multiplier

Multiply matrices and see the working clearly.

Graph / Network Drawer

Create and experiment with graphs and networks.

General Maths Grade Calculator

Estimate final grades using Queensland assessment weightings.

Specialist Mathematics

Unit Circle Tool

Visualise angles, radians and coordinates interactively.

The Unit Circle, Sine & Cosine

See the connection between the unit circle and trig functions

The Inclusion-Exclusion Principle

Generate a Venn diagram to represent two sets

Group Theory Portal

Click here for all group theory apps!

Just for fun!

Word Puzzle Generator

Can your class solve these brain teasers?

Doomsday Algorithm Trainer

Practice John Conway’s mental calendar method.

Golden Spiral Builder

Draw an approximation of the Golden Spiral using squares, rectangles and φ.

Pi Memoriser

Train for Pi Day here!

How Many Days Left?

Tells you how many days are left in the QLD public school year!

Brain Breaks

Not made by me, but here are links to some fun activities to break up a lesson.

WordGuessr

A great Wordle clone with customizable settings.

Contexto

Guess the word by discovering related words.

GeoGuessr

Guess random locations on Google Maps. 3 free guesses per day.