Maths Key Stage 3 – Delta (Higher)


In maths at Stretford High school students follow a 5 year tiered scheme of work based on 5 maths areas: Number, Algebra, Probability & Statistics, Geometry and Measures, and Ratio and Proportion which starts in KS3 and lays the foundation for GCSE work in year 9 and throughout KS4. KS3 pupils follow the Pi, Theta or Delta programme using a variety of teaching methods and applying the Mathematics to real life situations. The programme includes problem solving mathematics including financial planning. Students are assessed at the end of each unit and half term, they are notified of their strengths and areas for development so they are clear of what they have done well and how to improve for next time.

Students study the Mathematics National Curriculum and through this we aim to develop our students as follows:

  • a positive attitude towards mathematics, as well as competence and confidence in mathematical knowledge, concepts and skills;
  • an ability to solve problems, to reason, to think logically and to work systematically and logically;
  • the skills to use their own initiative and an ability to work both independently and in co-operation with others;
  • an ability to communicate through mathematics and to use and apply mathematics across the curriculum and in real life.
Year 7 Curriculum OverviewThemesUnit content
Term 11 Analysing and displaying data
2 Number skills- Four functions
3 Equations, functions and formulae
4 Fractions - Multiplying, dividing, adding and subtracting
Two-way tables and bar charts
Averages and range
Grouped data
Pie charts
Scatter graphs and correlation
Factors, primes and multiples
Using negative numbers
Multiplying and dividing
Squares and square roots
More powers and roots
Simplifying algebraic expressions
Writing algebraic expressions
Substitute into formulae
Brackets and powers
Factorising expressions
4 functions & fractions
Fractions, decimals and percentages
Working with mixed numbers
Term 25 Angles and shapes - Angles in differ
6 Decimals
7 Equations
Angles and parallel lines
Angles in polygons
Ordering decimals
Rounding decimals
Adding and subtracting decimals
Multiplying & dividing decimals
Fractions, decimals and percentages
Calculating percentage increases and decreases
Solving one-step and two-step equations
Trial and improvement
Term 38 Multiplicative reasoning
9 Perimeter, area and volume
10 Sequences and graphs
Metric and imperial units
Writing ratios
Sharing in a given ratio
Direct and inverse proportion
Using the unitary method
Triangles, parallelograms and trapeziums
Perimeter and area of compound shapes
Properties of 3D solids
Surface area
Volume of cubes and cuboids
The nth term
Pattern sequences
Coordinates and line segments
Drawing straight-line graphs
Year 8 Curriculum OverviewThemesUnit content
Term 11 Factors and powers
2 Working with powers
3 2D shapes and 3D solid
4 Real life graphs
Prime factor decomposition
Laws of indices
STEM: Powers of 10
Calculating and estimating
Simplifying expressions
More simplifying
Expanding and simplifying
Substituting and solving
Plans and elevations
Surface area volume of prisms and cylinders
Pythagoras' theorem
Direct proportion
Interpreting financial graphs
Distance-time graphs
Rates of change
Misleading graphs
Term 25 Transformations
6 Fractions, decimals and percentages
7 Constructions and loci
Reflection, translation, rotation and enlargement
Identify planes of reflection symmetry in 3D solids.
Area and volume enlargement
Recurring decimals
Work out an original quantity before a percentage increase or decrease
Percentage change
Repeated percentage change
Accurate drawings
Constructing shapes
Bisecting lines angles and perpendicular bisectors
Term 38 Probability
9 Scale drawings and measures
10 Graphs
Comparing probabilities
Mutually exclusive events
Estimating probability
Experimental probability
Probability diagrams
Tree diagrams
Maps and scales
Scales and ratio
Congruent and similar shapes
Use similarity to solve problems in 2D shapes.
Plotting linear graphs
The gradient
y = mx + c
Parallel and perpendicular lines
Inverse functions
Non-linear graphs