A number pattern is a series of numbers that follow a specific rule. Examples include: odd numbers, even numbers, square numbers and multiples. Linear sequences increase or decrease by the same ...

Today we learned about square and rectangular numbers! But why do we call some numbers square and others rectangular? A number is considered ... let's make a piece of art using square and rectangles.

Now, UNSW Honorary Professor Norman Wildberger has revealed a new approach using ... with number patterns in sets of elements. The most famous combinatorics sequence, called the Catalan numbers ...