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juxtapose
To place side by side in an expression to indicate multiplication.
5n means 5 * n
ab means a * b
key sequence
A set of instructions for performing a particular calculation or function with a calculator.
14 [+] 37 [=] 51
label
Descriptive word or phrase used to put numbers in
context.
24 children27 ducks
30 cents
3 o’clock
1 kg
least common
denominator
The least common multiple of the
denominators of every fraction in
given collection of fractions.
line graph(broken-line
graph)
A graph in which points are
connected by a line or line segment to
represent data.
line of
reflection (mirror line)
A line that divides a figure into tow halves that re mirror
images.
line of symmetry
A line through a symmetric figure. Each
point is one of the halves of the figure is
the same distance from this line as the
corresponding point in the other half.
line symmetry
A figure has line symmetry if a line can be drawn through the figure that divides into two parts so that both
parts look exactly alike, but facing in opposite
directions.
line plot
A sketch of data in which checkmarks, X’s
or stick-on notes above a number line
show the frequency of each value.
Nu
mb
er
of
child
ren
0 1 2 3 4 5X X X X X
X X X X X
X X
map legend
A diagram that explains the
symbols, markings and colors on a
map. Also called a map key.
map scale
A rate that compares the
distance between two locations on a
map with the actual distance between
them.
Math Message
Actives to start at the beginning of the math lesson.
1.1
Math Message 1.1 We are going to mark school days on a number line.Where would you mark today on the number line?
mathematics
A study of relationships among numbers, shapes, systems, and patterns. It is used to count, measure
things, to discover similarities and
differences between them, to solve problems, and to learn about and organize
the world.
measurement unit
The reference unit used when measuring
length, weight, capacity, time or
temperature.
mean
A typical or middle value for
a set of numbers. It is the average.
2, 4, 5, 9, 10 = 3030 ÷ 5 = 6
The mean is 6
median
The middle value in a set of data
when the data is listed in order.
2, 35, 65, 77, 80, 100, 205
memory key
The [M+], [M-], and [MRC] calculator keys. The [M+] key is
used to add a number to the number stored in the
calculator's memory; the [M-] key is used to subtract a
number from the number in memory. The [MRC] key,
pressed once, displays the number currently stored in memory; when the key is
pressed twice, the calculator's memory is cleared.
Mental Math and Reflexes
Oral lessons to strength children's
number sense and to review and advance
essential basic skills.
metric system
A measurement system based on
the base 10 numeration system and used in most countries of the
world.
middle value
The number in the middle when a set
of data is organized in
sequential order.
2, 35, 65, 77, 80, 100, 205
multiplicative inverses
Two numbers whose products is 1.
Multiplicative inverses are also called
reciprocals of each other.
multiplications/division diagrams
The diagram has a number of groups, a
number in each group and a total
number.
4 x 3 = 12
name-collection box
A boxlike diagram tagged with a given number and used for
writing the names for that number.
negative rational numbers
A number less than 0 that can be written as
a fraction or terminating or
repeating decimal.
-4-0.333…
-4/5
n-gon
All other polygons can be called n-gons. You can
think of n-gons as meaning "any" number of sides, or whatever number of sides your current polygon has.
net score
The final score of a turn or game after
any operations have been done.
In the game of Factor Captor, your first move is 29, your opponent's move is 1. You get your net score, 28, by subtracting 1 from 29.
nonagon
A polygon that has nine sides and nine angles, more properly
(but less often!) called an enneagon.
A regular nonagon has nine equal sides and nine equal
angles.
number family
A triplet of numbers with two addends and their sum or two factors and their products.
3 x 5 = 155 x 3 = 1515 ÷ 3 = 515 ÷ 5 = 3
3 + 5 = 85 + 3 = 88 - 3 = 58 - 5 = 3
8
3 5+,-
15
5 3x,÷
number model
A number sentence that
models or fits a situation.
Sara has three round blocks And 2 square blocks. How many blocks in all?
3+2=5 blocks
number model
number model
A number sentence that shows how the
parts of a number story are related.
Sara has three round blocks And 2 square blocks. How many blocks in all?
3+2=5 blocks
number model
number sentence
A sentence that is made up of
numerals and a relation symbol
(=,<,>)
2 + 3 = 5
894 < 1234
23 X 2 > 20
(10 - 4) X 5 = 30
odd number
A number that can not be
divided by 2. It has
1, 3, 5, 7, or 9 in the ones
place.
0 ^ 2 ^ 4 ^ 6 ^ 8 ^ 10^121 3 5 7 9 11
odd numbers
even numbers
1-facts
The sum of two 1-digit numbers where one of the numbers
is one.
3 + 1 9 + 1
0 + 1
4 + 1
2 + 1
1 + 1
7 + 1
6 + 1
5 + 1
operation
An action preformed on one or two numbers
producing a single number result.
2 + 5 = 7
2 X 1 = 229 – 8 = 11
12 ÷ 2 = 6
operation
Addition, subtraction, multiplication, division, raising to a power, and
taking a root are mathematical operations.
opposite of a number
A number that is the same distance from zero
on the number line as the given number but
on the opposite side of the zero.
ounce (oz)
A standard unit of weight equal
to 1/16 of a pound.
10 pennies = 1 oz
160 pennies = 1 pound
outcome
A possible result of a
random process.
Head and tails are two outcomes from flipping a coin.
parabola
The curve formed by the surface of a right
circular cone when it is sliced by a plane that is parallel to a side of the
one.
parabola
A parabola can also be described as the curve from a line and a point that is not on the line.
parallel
Lines, rays, line segments, or planes
that are equal distance at all
points, no matter how far; never
meeting.
parallelogram
A quadrilateral that has two pairs of
parallel sides and opposite sides that
are congruent.
part-and-total
diagram
A diagram used with problems in with two or more
quantities are combined to from a
total quantity.
part-to-part ratio
A ration that compares a part of the whole to another part of the
whole.
Part to part compares the red circles to the yellow circles. Part to part ratio is 2:5