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Scaling and the two main patterns

Scaling and the two main patterns

Proportion describes how two quantities change together. A unit rate is the amount for 1 unit, such as cost per apple or cartons per hour, and it often helps you spot the relationship.

Direct and Inverse Proportion Lesson

  1. GCSE
  2. /Maths
  3. /Direct and Inverse Proportion

Step-by-step lessons covering OCR GCSE Maths Direct and Inverse Proportion for Foundation and Higher tier. Each lesson works through exam-style questions in the written papers format. Build fluency with number, ratio and algebra first, since geometry, probability and statistics topics rely on them, and leave extra time nearer the exam for Higher-tier problem-solving and multi-step reasoning questions.

Lessons

Writing a Ratio as a Fraction or Linear FunctionDirect and Inverse ProportionReverse PercentagesStandard FormSpeed and DensityChanging the Subject of a FormulaExpanding and Factorising QuadraticsSolving QuadraticsDrawing Quadratic GraphsSimultaneous EquationsSolving Simultaneous Equations GraphicallyGradient of a LineEquation of a LineSpheres and ConesSector Areas and Arc LengthsSimilar Shapes (Lengths)Exact trig valuesProbability TreesVenn Diagrams