I have been looking over this old image I made back in 2016. I wanted to look at different ways of viewing square numbers. The image at the top right is one of my favourite and I first saw it on the nrich website: https://nrich.maths.org/2275 Image


It led me to think about the difference of two consecutive squares and the questions below.

Screenshot 2020-08-17 at 23.22.47

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