Free, no account needed to read
Free O Level revision
Free maths and science revision for O Level, with every wrong answer named as a mistake. Sat in Pakistan, Bangladesh, Sri Lanka, Mauritius, Zimbabwe and Singapore, usually at ages 14 to 16.
Our material is written for the English GCSE. In maths and the three sciences that is the same content you are sitting, so it transfers. This page says exactly what carries over and what does not, before you spend any time on it.
What carries over to O Level
Maths
Nearly all of it. Number, algebra, ratio, geometry, trigonometry, probability and statistics are the same mathematics, set the same way.
- Number and place value
- Fractions, decimals and percentages
- Ratio and proportion
- Algebra basics
- Equations and inequalities
- Sequences
- Straight-line graphs
- Quadratics
- Angles and polygons
- Pythagoras and trigonometry
- Area, perimeter and volume
- Transformations
- Probability
- Statistics and averages
- Vectors
Biology
The core content matches: cells, transport, enzymes, circulation, respiration, photosynthesis, inheritance and ecology.
- Cell biology
- Transport in cells
- Digestion and enzymes
- The heart and circulation
- Respiration
- Photosynthesis
- The nervous system
- Homeostasis
- Hormones
- The menstrual cycle
- Inheritance and genetics
- Variation and evolution
- Ecology and cycles
- Disease and immunity
Chemistry
The core content matches: atomic structure, the periodic table, bonding, moles and calculations, rates, and acids and bases.
- Atomic structure
- The periodic table
- Ionic bonding
- Covalent bonding
- States of matter
- Chemical calculations
- Rates of reaction
- Electrolysis
- Acids and bases
- The reactivity series
- Energy changes
- Organic chemistry
- Crude oil and fuels
- The atmosphere and greenhouse effect
Physics
The core content matches: forces and motion, energy, electricity, waves, magnetism and radioactivity.
- Forces and motion
- Newton’s laws
- Energy stores and transfers
- Electricity and circuits
- Electromagnetism
- Waves
- The electromagnetic spectrum
- The particle model
- Radioactivity
- Pressure
- Space physics
What does not
Practical work is assessed differently
Our science material teaches the ideas and the calculations, not a particular board's practical scheme. If you sit an alternative to practical paper, practise that paper from your own board.
English Literature does not transfer
Set texts are chosen by each board and ours are the English GCSE texts. The reading and language analysis skills still help; the texts will not be yours.
History, geography and religious studies are written to the English syllabus
The topics are chosen for English exam boards, so treat them as background reading rather than as revision for your paper.
We hold no Cambridge or Edexcel International past papers
Our past paper pages cover the English boards. Get your own past papers from your school or your board, and use our material for the teaching and the practice.
The mistake behind every wrong answer
Every wrong option in our practice is a named mistake, not a filler. These 80 pages publish them: what the mistake looks like, why it happens and a worked contrast. A misconception has no nationality, so all of them apply to you.
Maths
- Adding and subtracting negatives
- Angles in polygons
- Angles on lines and at a point
- Area and perimeter of rectangles
- Averages from a frequency table
- Circles
- Collecting like terms
- Combined events
- Compound shapes
- Decimal place value
- Enlargement
- Factorising harder quadratics
- Fractions of an amount
- Gradient from two points
- Hypothesis testing
- Integration
- Linear sequences
- Magnitude
- Parallel and perpendicular lines
- Parallel vectors
- Percentage change
- Percentages of an amount
- Powers and indices
- Probability of one event
- Probability without replacement
- Proof
- Proportion and scale
- Pythagoras' theorem
- Quadratic and other sequences
- Range and spread
- Rotation
- Rounding and significant figures
- Sharing in a ratio
- Solving linear equations
- Solving quadratics
- Standard form
- Stationary points
- Surds
- The binomial expansion
- The chain rule
- The discriminant
- The equation of a straight line
- The mean
- The median
- The mode
- The normal distribution
- The probability of not happening
- The product rule
- Trigonometry
- Turning a problem into an equation
- Vector arithmetic
- Vector arithmetic
- Vector paths
- Volume
Science
- Atomic structure
- Bonding
- Cells
- Chemical reactions
- Circuits
- Density
- Earth and space
- Ecosystems and food chains
- Energy stores and transfers
- Evolution and natural selection
- Forces
- Genetics and inheritance
- Health and lifestyle
- Light and shadows
- Muscles and movement
- Reproduction
- Respiration
- Rocks and the rock cycle
- Separating mixtures
- Speed and acceleration
- The atmosphere
- The periodic table
- The reactivity series
- The skeleton
- Variation
- Working scientifically
Questions students ask
Is WAJD Academy free for O Level students?
Yes. Every lesson and practice question is free, wherever you are: no card, no adverts and no trial that runs out.
Is this material written for O Level?
It is written for the English GCSE, and the maths and the three sciences are the same content as the Cambridge O Level. We list on this page exactly what transfers and what does not, so you can judge it before you spend time on it.
Which exam boards do you cover?
Our past paper pages cover the English boards. We hold no Cambridge International papers, so use your own board's papers for timed practice and use WAJD for the teaching, the practice questions and the mistakes.
What is different about the practice here?
Every wrong option is a named mistake rather than a random distractor, so when you get a question wrong the site tells you which misconception you just used and why it is wrong. All of them are published openly.
WAJD Academy is not affiliated with, endorsed by or connected to Cambridge International or Pearson. O Level is their qualification; this page describes only what our own free material covers.