👉 Learn about sequences. A sequence is a list of numbers/values exhibiting a defined pattern. A number/value in a sequence is called a term of the sequence. There are many types of sequence, among ...

👉 Learn how to write the explicit formula for the nth term of an arithmetic sequence. A sequence is a list of numbers/values exhibiting a defined pattern. A number/value in a sequence is called a ...

What are Sequence and Series? A sequence is a structured arrangement of numbers, where each number is called a term. Typically, terms in a sequence are denoted as ai or an, with the index letter i or ...

This is a whole lesson on the Sum of Arithmetic Series that builds on the previous lesson introducing arithmetic sequences. This lesson focuses on where the formula comes from and how to use it for ...

Clear explanations, worked examples, and structured practice guide students from recognising patterns to applying formulas confidently. The resource is suitable for classroom teaching, revision, ...

Between each pair of terms in this sequence is the amount the sequence is decreasing by. The 𝒏th term refers to a term's position in the sequence, for example, the first term has 𝒏 = 1, the second ...