Ratio, proportion and rates of change: interpret the gradient at a point on a curve as the instantaneous rate of change; apply the concepts of average and instantaneous rate of change (gradients of chords and tangents) in numerical, algebraic and graphical contexts (this does not include calculus) (Higher tier only)(Pearson Edexcel GCSE)

Mastery Mind: Mathematics Revision · Oct 20, 2026 · 5m

A curve tells two stories: how much there is and how quickly it is changing. Learn when to use a chord or a tangent, calculate reliable gradients and turn your answer into an exam-ready rate with the correct sign and units. Listen to this audio revision guide for Ratio, proportion and rates of change: interpret the gradient at a point on a curve as the instantaneous rate of change; apply the concepts of average and instantaneous rate of change (gradients of chords and tangents) in numerical, algebraic and graphical contexts (this does not include calculus) (Higher tier only). Test your…