KS3 Vocabulary checklist

1 Vocabulary checklist Year 7. This list contains the key words used in the Year 7 teaching programme and supplement of examples. Some words will be familiar to pupils in Year 7 from earlier work. For definitions of the words you will need to refer to a mathematical dictionary or to the National Curriculum glossary on the QCA website at Applying mathematics Integers, powers and roots and solving problems classify common factor answer consecutive evidence divisible, divisibility explain divisor explore factor investigate factorise method highest common factor (HCF). problem integer reason, reasons lowest common multiple (LCM). results multiple solution (of a problem). negative ( 6). solve plus, minus true, false positive ( +6). prime Numbers and the prime factor number system property sign Place value, ordering and square number, squared rounding square root approximate, approximately triangular number approximately equal to ( ).

2 Fractions, decimals, between percentages, ratio and compare proportion decimal number cancel, cancellation decimal place convert digit decimal fraction equals (=) equivalent, equivalence greater than (>), less than (<) fraction greatest value, least value lowest terms most/least significant digit mixed number nearest numerator, denominator order percentage (%). place value proper/improper fraction round proportion tenth, hundredth, thousandth ratio, including notation 3 : 2. to one decimal place (to 1 ) simplest form value zero place holder 2 Vocabulary checklist Crown copyright 2001. Calculations Algebra add, addition Equations, formulae and amount identities brackets algebra calculate, calculation brackets calculator: clear, display, enter, commutative key, memory, equals (=). change (money).

3 Equation commutative expression complements (in 10, 100). evaluate currency prove difference simplify, simplest form discount solution (of an equation). divide, division solve (an equation). double, halve squared estimate substitute exact, exactly symbol exchange rate term factor therefore ( ). increase, decrease unknown inverse value multiply, multiplication variable nearly verify operation order of operations Sequences, functions and graphs partition axis, axes product consecutive quotient continue remainder coordinate pair rough, roughly coordinate point sale price coordinates sign equation (of a graph). subtract, subtraction finite, infinite sum function total function machine generate graph increase, decrease input, output mapping n th term origin predict relationship, rule sequence straight-line graph term x-axis, y-axis x-coordinate, y-coordinate Crown copyright 2001 Vocabulary checklist 3.

4 Shape, space and Transformations measures axis of symmetry centre of rotation Geometrical reasoning: lines, congruent angles and shapes line of symmetry adjacent (side). line symmetry angle: acute, obtuse, right, reflex mirror line angles at a point object, image angles on a straight line order of rotation symmetry base (of plane shape or solid). reflect, reflection base angles reflection symmetry centre rotate, rotation circle rotation symmetry concave, convex symmetrical degree ( ). transformation diagonal translate, translation diagram Coordinates edge (of solid). equal (sides, angles) axis, axes face coordinates horizonal, vertical direction identical (shapes) grid intersect, intersection intersecting, intersection line, line segment origin opposite (sides, angles) position parallel quadrant perpendicular row, column plane x-axis, y-axis point x-coordinate, y-coordinate polygon: pentagon, hexagon, Construction and loci octagon construct quadrilateral: arrowhead, delta, draw kite, parallelogram, rectangle, rhombus, square, trapezium measure regular, irregular net shape perpendicular side (of 2-D shape) protractor (angle measurer).

5 Solid (3-D) shape: cube, cuboid, ruler cylinder, hemisphere, prism, set square pyramid, square-based pyramid, sketch sphere, tetrahedron three-dimensional (3-D). triangle: equilateral, isosceles, scalene, right-angled two-dimensional (2-D). vertex, vertices vertically opposite angles 4 Vocabulary checklist Crown copyright 2001. Measures and mensuration Handling data area: square millimetre, square average centimetre, square metre, square kilometre bar chart capacity: millilitre, centilitre, litre; bar-line graph pint, gallon class interval length: millimetre, centimetre, data, grouped data metre, kilometre; mile data collection sheet mass: gram, kilogram; ounce, database pound experiment time: second, minute, hour, day, frequency week, month, year, decade, century, millennium frequency chart temperature: degrees Celsius, frequency diagram degrees Fahrenheit interpret depth interval distance label height, high mean perimeter median surface, surface area mode, modal class/group width pie chart questionnaire range represent statistic, statistics survey table tally title Probability certain, uncertain chance, no chance, good chance, poor chance, fifty-fifty chance, even chance dice doubt equally likely fair, unfair likelihood likely, unlikely outcome possible, impossible probability probability scale probable random risk spin, spinner Crown copyright 2001 Vocabulary checklist 5.

6 Year 8. This list contains the new key words introduced in the Year 8 teaching programme and supplement of examples. Words from earlier years are also used. For definitions, refer to a mathematical dictionary or to QCA's glossary at Applying mathematics Calculations and solving problems associative conclude, conclusion best estimate counter-example degree of accuracy deduce distributive exceptional case interest justify profit, loss prove, proof service charge sign change key tax Numbers and the value added tax (VAT). number system Place value, ordering and Algebra rounding ascending, descending Equations, formulae and billion identities index algebraic expression power collect like terms formula, formulae Integers, powers and roots linear equation cube, cube number linear expression cube root ( 3 8).

7 Multiply out (expressions). cubed ( 23). prove, proof prime factor decomposition transform to the power of n ( 64). verify Fractions, decimals, percentages, ratio and Sequences, functions and proportion graphs direct proportion arithmetic sequence recurring decimal difference pattern terminating decimal flow chart unit fraction general term unitary method gradient intercept linear function linear relationship linear sequence notation T(n). slope steepness 6 Vocabulary checklist Crown copyright 2001. Shape, space and Handling data measures continuous Geometrical reasoning: data log lines, angles and shapes discrete alternate angles distance time graph bisect, bisector distribution complementary angles interrogate congruent, congruence line graph corresponding angles population pyramid elevation primary source equidistant sample exterior angle scatter graph heptagon secondary source interior angle stem-and-leaf diagram isometric two-way table mid-point Probability plan view biased prove, proof event supplementary angles experimental probability tessellate, tessellation sample triangular prism sample space view theoretical probability Transformations theory centre of enlargement enlarge, enlargement map plan scale, scale factor scale drawing Construction and loci compasses construction lines locus.

8 Loci perpendicular bisector straight edge Measures and mensuration bearing, three-figure bearing displacement foot, yard hectare tonne volume: cubic millimetre, cubic centimetre, cubic metre Crown copyright 2001 Vocabulary checklist 7. Year 9. This list contains the new key words introduced in the Year 9 teaching programme and supplement of examples. Words from earlier years are also used. For definitions, refer to a mathematical dictionary or to QCA's glossary at Applying mathematics Algebra and solving problems Equations, formulae and generalise identities trial and improvement and, or common factor cubic equation Numbers and the cubic expression number system expand the product (of two linear expressions). Place value, ordering and factorise rounding identically equal to ( ). exponent identity greater than or equal to ( ).

9 Index law less than or equal to ( ). inequality significant figures quadratic equation standard (index) form quadratic expression upper bound, lower bound region Integers, powers and roots simultaneous equations index, indices subject of the formula index law take out common factors index notation Sequences, functions and Fractions, decimals, graphs percentages, ratio and cubic function proportion curve proportional to ( ) first/second difference proportionality identity function inverse function inverse mapping Calculations quadratic function compound interest quadratic sequence constant maximum/minimum point cost price, selling price maximum/minimum value reciprocal self-inverse 8 Vocabulary checklist Crown copyright 2001. Shape, space and Handling data measures bias Geometrical reasoning: lines, census angles and shapes cumulative frequency arc estimate of the mean/median centre (of circle) interquartile range chord line of best fit circumference quartiles convention raw data cross-section representative (sample).

10 Definition Probability derived property exhaustive diameter independent hypotenuse limit pi ( ) mutually exclusive plane notation: p(n) for probability of projection event n Pythagoras' theorem relative frequency similar, similarity tree diagram region radius region section sector segment similar, similarity tangent (to a curve). Transformations axis of rotation symmetry plane symmetry plane of symmetry Construction and loci circumcentre circumcircle circumscribed inscribed Measure and mensuration adjacent, opposite, hypotenuse angle of depression angle of elevation density pressure sine (sin), cosine (cos), tangent (tan). speed: miles per hour, metres per second Crown copyright 2001 Vocabulary checklist 9.