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Problem solving - sequences

Solve problems using sequences

3 hand-picked video lessons for this topic, each checked for relevance and clarity, graded by difficulty and labelled by depth. Press play to watch — nothing loads from YouTube until you do.

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Grade 3–6 Core 🇬🇧 UK

GCSE Maths - How to Write Expressions for the nth term of Arithmetic Sequences (2026/27 exams)

Cognito 809K views

Two-step method for writing the nth term expression of a linear sequence, with checks.

Jump to 0:00Intro & Defining Arithmetic Sequences 0:36What is the nth Term Expression?1:19Using the Expression to Find Terms 2:25How to Find the nth Term Expression 3:50Example 2 (Negative Difference)4:41Example 3 (Decimal Difference)

Grade 7–9 Core 🇬🇧 UK

Finding the nth term of a Quadratic Sequence - GCSE Higher Maths

1st Class Maths 826K views

Clear step-by-step method for finding the nth term of a quadratic sequence.

Jump to 0:00Intro 0:18Finding the second difference 1:26Finding the coefficient of n squared 1:58Finding the linear part 3:23Finding the nth term of the quadratic sequence 3:48A second example

Grade 3–7 Core 🇬🇧 UK

Sequences and Finding the Nth Term

Maths Genie 163K views

Trusted UK revision channel covering sequences and finding the nth term.