Year 9 maths
Topics are arranged by the term they are taught. Pick the one you are doing in class: each has a lesson video, worked questions and practice at three levels.
Autumn term
- SequencesArithmetic and geometric sequences, the nth term of a linear sequence, and quadratic sequences and their nth term.100 questionsLesson video
- Ratio, proportion and percentagesRatio problems, direct and inverse proportion, compound measures, reverse percentages and repeated percentage change.100 questionsLesson video
- Algebra: substitution, rearranging and factorisingSubstitution, changing the subject, algebraic manipulation, expanding brackets and factorising expressions and quadratics.100 questionsLesson video
- Linear graphs and simultaneous equationsDrawing linear graphs, y = mx + c, gradients and intercepts, parallel and perpendicular lines, and solving simultaneous equations graphically.100 questionsLesson video
Spring term
- Pythagoras and trigonometryPythagoras’ theorem, sine, cosine and tangent in right-angled triangles, finding sides and angles, and exact trigonometric values.100 questionsLesson video
- StatisticsAverages, collecting data, statistical diagrams, frequency polygons, cumulative frequency, box plots and histograms.100 questionsLesson video
- ProbabilityRelative frequency, mutually exclusive events, independent events, tree diagrams and Venn diagrams.100 questionsLesson video
- Powers, standard form and surdsIndex laws, zero, negative and fractional indices, standard form, and simplifying, multiplying and rationalising surds.100 questionsLesson video
Summer term
- Equations and inequalitiesLinear and quadratic equations, simultaneous equations by elimination and substitution, and linear and quadratic inequalities.100 questionsLesson video
- Angles, transformations and circle theoremsAngles in polygons and parallel lines, scale drawings and bearings, transformations, and the circle theorems.100 questionsLesson video
- Circles, sectors and volumeArcs and sectors, area of quadrilaterals, and the volume and surface area of prisms, cylinders, pyramids, cones and spheres.100 questionsLesson video
Terms are approximate: schools order these units differently.