A triangular number counts objects arranged in an equilateral triangle. I think this is pretty much all you’ll ever need on the topic of Triangular Numbers - with 11 self-contained worksheets! It uses ...

A handy resource pack which includes 2 investigations on triangular numbers: 1 designed to introduce to pupils to the sequence (this resource links with properties of shape) and the other to help ...

Number sequences are sets of numbers that follow a pattern or a rule. Each number in a sequence is called a term. There are some special sequences that you should recognise. The most important of ...