Learn what an arithmetic sequence is and about number patterns in arithmetic sequences with this BBC Bitesize Maths KS3 article. For students aged of 11 and 14.

Number sequences are sets of numbers that follow a pattern or a rule. If the rule is to multiply or divide by a specific number each time, it is called a geometric sequence.

At first glance it might look like a bunch of boring 1s and 2s. But what's wonderful about the sequence is that it describes itself—and it does it over and over again.