#A1
use and interpret algebraic notation, including:
- \(ab\) in place of \(a×b\)
- \(3y\) in place of \(y+y+y\) and \(3×y\)
- \(a^2\) in place of \(a×a\), \(a^3\) in place of \(a×a×a\), \(a^2b\) in place of \(a×a×b\)
- \(\dfrac{a}{b}\) in place of \(a÷b\)
- coefficients written as fractions rather than as decimals
- brackets
Notes: it is expected that answers will be given in their simplest form without an explicit instruction to do so.
#A2
substitute numerical values into formulae and expressions, including scientific formulae
Notes: unfamiliar formulae will be given in the question.
See the Appendix for a full list of the prescribed formulae. See also A5
#A3
understand and use the concepts and vocabulary of expressions, equations, formulae, inequalities, terms and factors
to include identities
Notes: this will be implicitly and explicitly assessed.
#A4
simplify and manipulate algebraic expressions by:
- collecting like terms
- multiplying a single term over a bracket
- taking out common factors
- simplifying expressions involving sums, products and powers, including the laws of indices
simplify and manipulate algebraic expressions (including those involving surds) by:
- expanding products of two binomials
- factorising quadratic expressions of the form \(x^2+bx+c\), including the difference of two squares
simplify and manipulate algebraic expressions (including those involving surds and algebraic fractions) by:
- expanding products of two or more binomials
- factorising quadratic expressions of the form \(ax^2+bx+c\)
#A5
understand and use standard mathematical formulae
rearrange formulae to change the subject
Notes: including use of formulae from other subjects in words and using symbols.
See the Appendix for a full list of the prescribed formulae. See also A2
#A6
know the difference between an equation and an identity
argue mathematically to show algebraic expressions are equivalent, and use algebra to support and construct arguments
to include proofs
#A7
where appropriate, interpret simple expressions as functions with inputs and outputs
interpret the reverse process as the ‘inverse function’
interpret the succession of two functions as a ‘composite function’
Notes: understanding and use of \(f(x)\), \(fg(x)\) and \(f^{−1}(x)\) notation is expected at Higher tier.
#A8
work with coordinates in all four quadrants
#A9
plot graphs of equations that correspond to straight-line graphs in the coordinate plane
use the form \(y=mx+c\) to identify parallel lines
find the equation of the line through two given points, or through one point with a given gradient
use the form \(y=mx+c\) to identify perpendicular lines
#A10
identify and interpret gradients and intercepts of linear functions graphically and algebraically
#A11
identify and interpret roots, intercepts and turning points of quadratic functions graphically
deduce roots algebraically
deduce turning points by completing the square
Notes: including the symmetrical property of a quadratic. See also A18
#A12
recognise, sketch and interpret graphs of linear functions and quadratic functions
including simple cubic functions and the reciprocal function \(y=\dfrac{1}{x}\) with \(x≠0\)
including exponential functions \(y=k^x\) for positive values of \(k\), and the trigonometric functions (with arguments in degrees) \(y=\sin{x}\), \(y=\cos{x}\) and \(y=\tan{x}\) for angles of any size
Notes: see also G21
#A13
sketch translations and reflections of a given function
#A14
plot and interpret graphs, and graphs of non-standard functions in real contexts, to find approximate solutions to problems such as simple kinematic problems involving distance, speed and acceleration
including reciprocal graphs
including exponential graphs
Notes: including problems requiring a graphical solution. See also A15
#A15
calculate or estimate gradients of graphs and areas under graphs (including quadratic and other non-linear graphs), and interpret results in cases such as distance-time graphs, velocity-time graphs and graphs in financial contexts
Notes: see also A14, R14 and R15
#A16
recognise and use the equation of a circle with centre at the origin
find the equation of a tangent to a circle at a given point
#A17
solve linear equations in one unknown algebraically
find approximate solutions using a graph
including those with the unknown on both sides of the equation
Notes: including use of brackets.
#A18
solve quadratic equations algebraically by factorising
including those that require rearrangement
including completing the square and by using the quadratic formula
find approximate solutions using a graph
Notes: see also A11
#A19
solve two simultaneous equations in two variables (linear/linear) algebraically
find approximate solutions using a graph
including linear/quadratic
#A20
find approximate solutions to equations numerically using iteration
Notes: including the use of suffix notation in recursive formulae.
#A21
translate simple situations or procedures into algebraic expressions or formulae
derive an equation (or two simultaneous equations), solve the equation(s) and interpret the solution
Notes: including the solution of geometrical problems and problems set in context.
#A22
solve linear inequalities in one variable
solve linear inequalities in one or two variable(s), and quadratic inequalities in one variable
represent the solution set on a number line
represent the solution set on a number line, using set notation and on a graph
Notes: students should know the conventions of an open circle on a number line for a strict inequality and a closed circle for an included boundary. See also N1
In graphical work the convention of a dashed line for strict inequalities and a solid line for an included inequality will be required.
#A23
generate terms of a sequence from either a term-to-term or a position-to-term rule
Notes: including from patterns and diagrams.
#A24
recognise and use sequences of triangular, square and cube numbers and simple arithmetic progressions
including Fibonacci-type sequences, quadratic sequences, and simple geometric progressions (\(r^n\) where \(n\) is an integer and \(r\) is a rational number \(> 0\))
including other sequences
including where \(r\) is a surd
Notes: other recursive sequences will be defined in the question.
#A25
deduce expressions to calculate the nth term of linear sequences
including quadratic sequences