Maths: every topic explained
30 short explanations for Maths, one per syllabus topic: the idea, the rules, the common mistake and a worked example. Each one links to our notes and a free test on that topic.
Number
- Structure and calculation
- Powers, roots, indices and standard form
- Surds and exact calculation
- Fractions, decimals and percentages
- Measures, estimation and bounds
Algebra
- Algebraic expressions
- Formulae, identities, proof and functions
- Coordinates and straight-line graphs
- Quadratic and other graphs
- Graphs in context, gradients, areas and circles
- Solving equations
- Simultaneous equations and inequalities
- Sequences
Ratio, proportion and rates of change
- Units, scale and ratio
- Percentages
- Direct and inverse proportion
- Compound measures and rates of change
- Growth and decay
Geometry and measures
- Angles, polygons and bearings
- Transformations
- Circle theorems
- Area, volume and surface area
- Congruence and similarity
- Pythagoras and trigonometry
- Sine rule, cosine rule and area of a triangle
- Vectors
Probability
Statistics
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