Mathematics Education

Multiples of 9 and 3 with Cuisenaire rods

You may have learnt at some point that multiples of 9 and 3 can be easily identified by…

Do We Want Our Students to Understand What They Are Doing or Follow a “Math(s) Recipe”?

Revisiting the Cosine Rule

I propose here a maths activity for (A-level or top GCSE) students where…

Why writing percentages as decimals and vice-versa is problematic

Since I started working in the UK in maths education, I have been surprised to see maths questions of the type “Write 0.35 as a percentage.” (And quite annnoyed to read on numerous websites “To express a decimal as a…

Visualising the Addition of Fractions

Here’s a visualisation of adding fractions with different denominators with some wooden shapes.

We have:

Square Roots — Visualisation of the Product and Quotient Rules

Working on making mathematical concepts visual, I found a nice way to illustrate the product and quotient rules for square roots (surds) — with as few words as possible…

Distance to 5 and 10 (Game 1)

Learning to count is actually a long journey that many of us, adults, have completely forgotten. Operations…

A Game to Understand Place Value

Here, I want to show a simple game with 10-based concrete materials…