Sum of squares
Joseph Louis Lagrange proved in 1770 that every positive integer can be expressed as the…
Grid lines – investigating HCF and LCM
For my remaining full week, I'm going to try and post one rich resource and…
Quadratic crossover
So here's a cute idea I was talking to a colleague about yesterday. I think…
Growing squares
This investigation is great for getting pupils to “spot” square number patterns – it’s particularly…
Square differences
Pupils explore which numbers can be written as the difference of two square numbers; a nice way to practise calculating with square numbers, but also encourages them to pattern-spot at the same time.
Happy numbers
This is one of my absolute favourite investigations to use when teaching square numbers. It…