IGCSE Sequences Made Easy: Finding the nth Term, Arithmetic & Geometric Sequences | Full Lesson

Описание: Master IGCSE Mathematics Sequences in this full, step-by-step lesson!
By the end of this class, you will be able to confidently identify, analyze, and solve arithmetic and geometric sequences, find the nth term, and tackle real IGCSE exam-style questions.

Whether you're preparing for your exams or strengthening your mathematical reasoning, this lesson gives you everything you need — clearly explained and fully worked through.

📘 What You Will Learn

✔️ What a sequence is and how patterns are formed
✔️ How to recognize arithmetic, geometric, and neither sequences
✔️ How to find the nth term of an arithmetic sequence
✔️ How to find the nth term of a geometric sequence
✔️ How to calculate any term using the nth-term formula
✔️ How to solve IGCSE-style exam questions with full working
✔️ How to interpret differences, ratios, and patterns
✔️ How to avoid the common mistakes students make

Perfect for:

IGCSE Mathematics (Core & Extended)

KS3/KS4 students

Cambridge, Edexcel, OCR, and international curricula

Learners who want simple, visual, and intuitive explanations

🔍 Lesson Breakdown
1️⃣ Introduction to Sequences

What a sequence is

Examples: arithmetic, geometric, Fibonacci

How patterns are formed

Why the nth term is important

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2️⃣ Arithmetic Sequences

Identifying a common difference

nth-term formula:

an=a1+(n−1)d
a
n
​

=a
1
​

+(n−1)d

Increasing and decreasing sequences

Fully worked examples

3️⃣ Geometric Sequences

Identifying the common ratio

nth-term formula:

an=a1rn−1
a
n
​

=a
1
​

r
n−1

Exponential growth patterns

Fully worked examples

4️⃣ Exam-Style Problems

Full IGCSE-style questions

Step-by-step reasoning

Marking scheme explained

5️⃣ Practice Questions & Quick Quiz

Fully solved practice

Formula application

Identifying sequence type

Quick knowledge check

⭐ Why This Lesson Helps You Score Higher

This video uses:

Clear explanations

Visual patterns

Progressive difficulty

Exam-standard language

Worked solutions

Real IGCSE questions

You will walk away confident, prepared, and exam-ready.