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What GCSE and A-level students say after revising with MathsGenie.

Harvey B. avatar

Harvey B.

Student

“This is such an amazing platform, it offers everything needed to improve your grade in a time efficient manor. Personally I love the videos as I am able to find areas that I am weak at in the practice papers.”
Tameem R. avatar

Tameem R.

Student

“Genuinely took me from a grade 4 in maths to achieving a grade 8 in my GCSE's in less than a few months. Best mathematics revision website for those who are aiming to get those high grades.”
Anyim P. avatar

Anyim P.

Student

“Genuinely I think every maths student should have this site. It takes you through the entire AS and A level Maths course, alongside exam questions with step by step solutions.”
Muhammad A. avatar

Muhammad A.

Student

“predicted papers are very useful and i believe there's not a better website for GCSE maths in the UK”
Rayan K. avatar

Rayan K.

Student

“Best Maths Resource out there! Absolutely amazing videos and very concise explantions on everything. Don't even get me started on the loads of exam question/worksheets that are so helpful. And it's all free!”
Dee avatar

Dee

Student

“The best Maths resource site in the world! They have it all and do a great job of keeping everything up to date. I still don't know how they are able to make this free for all. You are truly amazing.”
Hamid I. avatar

Hamid I.

Student

“They have helped me with my A level Maths performance significantly and I jumped from a grade U to a Grade A in only 2-3 months. I HIGHLY recommend to Maths students especially for A level.”
Sophie avatar

Sophie

Student

“MathsGenie's YouTube videos and worksheets are amazing. The videos go into such great depth but in a way that's simple to understand.”
Maria E. avatar

Maria E.

Student

“Amazing website! Truly helped with my GCSEs - I was a very poor student. Managed to go up and reach all grade 6-9's from U-4's. Would definitely recommend :)”
Justine K. avatar

Justine K.

Student

“Absolutely brilliant website with well organised, well written resources for learning or revising maths. I never hesitate to recommend mathsgenie to my students.”
Daryl G. avatar

Daryl G.

Student

“Took me a bit of getting used to but this new site is excellent. I found the old one really useful but this is next level. I share it with all my colleagues and students.”
Binuk J. avatar

Binuk J.

Student

“I used to be really bad at math. My first GCSE mocks I had a 2 but after I found MathsGenie I jumped from 2 to 4 under 3 months.”
Jourdie avatar

Jourdie

Student

“Improved my grade, I used to be borderline passing maths now I'm performing much better. There are videos, practice papers, solutions, exam questions, past GCSE papers all for free. This is really useful.”
Olla avatar

Olla

Student

“Honestly, it's super great. Easy, with the explanation on the side. Every topic also has more than 50 questions, making you feel more confident in doing different types f question in one topic. Try it!”

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Your maths questions, answered

Clear explanations for the questions that slow you down, with every step of the working shown.

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Programming

Parameter vs Argument: Does the GCSE Exam Distinguish Them?

Learn the difference between parameters and arguments in AQA GCSE Computer Science, with a simple code example and guidance on how to describe them in an exam.

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Programming

When to Use WHILE, REPEAT...UNTIL and FOR Loops

Choose the right GCSE Computer Science loop: use FOR for a known count, WHILE to test before repeating, and REPEAT...UNTIL when code must run at least once.

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Programming

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Start a guided session and work through the idea step by step.

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What’s the Difference Between a Procedure and a Function?

Learn the difference between a procedure and a function in GCSE Computer Science, with a simple example showing why output is not the same as returning a value.

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Data representation

Sampling Rate vs Sample Resolution in Sound Files

Learn the difference between sampling rate and sample resolution in digital sound files, with a GCSE Computer Science example and an exam mistake to avoid.

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Programming

Syntax Error vs Logic Error: What's the Difference?

Learn the difference between syntax errors and logic errors in GCSE Computer Science, with simple Python examples and tips for spotting each when testing code.

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Data representation

How Binary Shifts Multiply and Divide by Powers of 2

Learn why left binary shifts multiply by powers of 2 and right shifts divide, with an 8-bit example showing discarded remainders and overflow in GCSE Computer Science.

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Data representation

How to Convert Binary, Denary and Hexadecimal by Hand

Learn to convert binary, denary and hexadecimal by hand using place values and four-bit groups, with one worked example and a common mistake to avoid.

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Data representation

How Huffman Coding Works and How to Read Its Tree

Learn how Huffman coding builds a tree from symbol frequencies, gives shorter codes to common symbols, and lets you decode a binary message step by step.

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Data representation

How to Do Run-Length Encoding on a Bitmap Row

Learn how to run-length encode a bitmap row by counting consecutive pixels of the same colour, recording count-colour pairs, and avoiding GCSE mistakes.

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Programming

Local vs Global Variables: What’s the Difference?

Learn the difference between local and global variables, see a simple code example, and understand why variable scope matters in GCSE Computer Science.

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Data representation

How to Calculate Image Size from Pixels and Colour Depth

Learn how to calculate uncompressed image size from pixel dimensions and colour depth, convert bits to bytes, and avoid a common GCSE Computer Science mistake.

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Programming

Boundary Data vs Erroneous Data in Test Cases

Learn how boundary data differs from erroneous data in GCSE Computer Science test cases, with age-input examples and the exam mistake to avoid.

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Computer systems

How Cache, Clock Speed and Cores Affect Performance

Learn how cache size, clock speed and number of cores affect CPU performance, when each helps, and why no single specification guarantees a faster computer.

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Data representation

What's the Difference Between ASCII and Unicode?

Learn the difference between ASCII and Unicode for GCSE Computer Science, including character sets, code points, UTF-8 and a common exam mistake to avoid.

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Computer systems

Compiler vs Interpreter vs Assembler

Learn the difference between a compiler, interpreter and assembler for GCSE Computer Science, including what each translates and when a program runs.

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Computer systems

RAM, ROM, Cache and Registers: What's the Difference?

Learn the difference between RAM, ROM, cache and registers for GCSE Computer Science, including what each stores, where it is used and whether it is volatile.

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Computer systems

What Happens in Each Stage of the Fetch-Execute Cycle?

Learn what happens during fetch, decode and execute, including how the PC, MAR, MDR and CIR help the CPU run each instruction in GCSE Computer Science.

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Computer systems

Why Use a Low-Level Language Instead of a High-Level One?

Learn why programmers choose low-level languages for hardware control, limited memory and precise timing, and the trade-offs compared with high-level languages.

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Computer systems

How to Build a Three-Input Circuit Truth Table

Learn to build a three-input truth table for circuits with NOT, AND and OR gates, using intermediate columns to check every input combination and avoid errors.

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Boolean logic

Simplifying Boolean Expressions and Logic Tables

Learn how to simplify Boolean expressions and complete truth tables using NOT, AND and OR, with a clear GCSE AQA Computer Science example and exam tip.

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