Maths Terms for 11-13 Yr Olds


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James says: "This is glossary of terms for UK KS3 Maths,[ages 11-13] taken Works quite well with a 'random glossary entry' html block on a main course page since the definitions are in a small font size.



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C

Cancel (a fraction)

One way to simplify a fraction. The numerator and denominator are divided by a common factor. Also to ’reduce’ a fraction. Example: to simplify 6/16 the fraction is 'cancelled down' when the numerator and denominator are divided by 5 to give 1/3.

Capacity

Volume, i.e. a measure of three-dimensional space, applied to liquids, materials that can be poured or the space within containers. Units include cubic centimetres and litres - a

litre is equivalent to 1000 cubic centimetres (cm3)

Cartesian Co-ordinates

A system used to define the position of a point in two-dimensional and three-dimensional space. Two axes at right angles to each other are used to define the position of a point in a plane. The convention is to label the horizontal axis as the x-axis and the vertical axis as the y-axis. In this case, the origin is the intersection of the axes. The ordered pair of numbers (x, y) that defines the position of a point is the coordinate pair. Each of the numbers is a co-ordinate. The numbers are also known as Cartesian co-ordinates, after the French mathematician, René Descartes.

Categorical Data

Data arising from measurements taken on a categorical (unordered discrete) variable. Examples: pupils\' favourite colours; states of matter- solids, liquids, gases, gels etc; nutrient groups in foods - carbohydrates, proteins, fats etc; settlement types - hamlet, village, town, city etc; and types of land use - offices, industry, shops, open space, residential etc.

Centi-

Prefix meaning one-hundredth (of)

Centilitre

Symbol: cl. A unit of volume equivalent to one-hundredth of a litre.

Centimetre

Symbol: cm. A unit of linear measure, one hundredth of a metre.

Centre

The middle point.

Chord

A straight line segment joining two points on a circle or other curve.

Circle

A set of points in a plane at a fixed distance (the radius) from a fixed point (the centre) also in the plane; alternatively the path traced by a single point travelling in a plane at a fixed distance (the radius) from a fixed point (the centre) in the same plane. One half of a circle cut off by a diameter is a semi-circle.


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