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 or ideas for additional apps, please email me at the address below.

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!
Similar Triangle Scaling Problem Generator

It's in the name.

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

Just for fun!

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!

If you find bugs or have suggestions, please email me at the address below.