Mathematics Glossary
 Middle Years
Maxine Stinka, Saskatchewan Education,
Curriculum and Instruction
Note: The
definitions included here are those that are used in the Saskatchewan
Education document "Mathematics 69: A Curriculum Guide for the
Middle Level".
Various mathematics dictionaries
may have different definitions. These definitions are designed
to be meaningful to middle level mathematics teachers.
Select the first letter of
the term that you wish to look for.
A  B
 C  D
 E  F
 H  I
 J  K
 L  M
 N  O
 P  Q
 R  S
 T  U
 V  W
 X  Y
 Z
L
like terms
 terms that have the same
variables raised to the same
exponent. e.g. 3x^{2} and 2x^{2}.
linear equation
 an
equation whose graph is a line, that is, an equation that
has a degree of one.
e.g. y = 3x  2
linear growth
 Linear growth means that a quantity grows by the same amount in each step. For example you might have something that is 5 inches long on Monday morning and then 8 inches long on Tuesday morning and then 11 inches long on Wednesday morning and so on. So it is growing by 3 inches a day. If you draw a graph with the days on the horizontal axis and the height in inches on the vertical axis then the points lie on a line. This is why it is called linear growth.
line of symmetry
 a line that divides a figure into two parts,
each a mirror image of the other.
M
mean
 in statistics, the measure of central tendency
calculated by adding all the values and dividing the sum by the
number of values. (Often referred to as the average.)
median
statistical
 the measure of central tendency that is in the
middle when the values are arranged in order of size. If there
is an even number of data items, the median is the
mean of the middle two.
of a triangle
 a line segment from any vertex of a triangle
to the midpoint of the opposite side.
mental calculation
 refers to finding an exact answer mentally
(without the use of pencil and paper or calculator.)
mixed number
 a number consisting of a whole number and
a fraction.
e.g. 5 1/4
mode
 the value that appears most frequently in
a set of data.
monomial
 a number, a
variable or a product of numbers and variables.
multiplicative inverses(reciprocals)
 two numbers whose product is 1.
Questions or comments about the glossary can
be directed to TheCentralizer@MathCentral.uregina.ca
or see About Us
page for more information.
