above

acute angles

acute triangles

addends

addition

afternoon

ante meridiem

area

arrays

associative property

average

bar graph

base ten blocks

between

calendar

capacity

Celsius

center

centimeter

cent symbol

century

chart

circle

circumference

clock

coin

colon

column

combination

commutative property

compare

comparison symbols

compass

compass directions

compatible numbers

composite numbers

concentric circles

cone

congruent

coordinate graphs

coordinates

corner

counterclockwise

cube

cube roots

cubic

cup

cylinder

data

date

day

decade

decimal

decrease

degree

denominator

diagonal

diameter

differences

digit

digital

dime

dimensions

distance

divide

dividing

dividend

division

divisor

dollars

dollar symbol

double

dozen

edge

eighths

elapsed time

empty

endpoints

equal groups

equal sign

equilateral triangle

equivalent

estimate

estimating

even numbers

expanded form

exponents

expressions

simplifying expressions

faces of polyhedrons

fact families

factors

Fahrenheit

feet

fewer

fewest

fifths

first

formulas

fourths

fraction bar/line

fractions

full

function

function rules

gallon

geoband

geoboard

geometric

gram

graph

graphing grid

greater

greatest

greater than symbol

grid

half

half gallon

half hour

half past

heavier

heaviest

height

hexagon

horizontal

hour

hundred

identity property

improper fraction

inch

increase

infinity

intersect

irrational numbers

kilogram

kilometer

large

larger

largest

larger difference problems

smaller difference problems

last

leap year

length

less

less-than symbol

lighter

lightest

likelihood of events

line

linear

line graph

line segment

liter

long

longer

longest

mass

mean

measure

median

mental computation

meter

metric

middle

mile

milliliter

millimeter

minus sign

minute

mixed numbers

month

more

morning

most

multiples

multiplication

nearest

negative numbers

nickel

night

noon

number

number line

number sentence

numerator

oblique

obtuse

obtuse triangle

o’ clock

odd numbers

ordered pair

order of operations

ordering

ordinal

names for ordinal numbers

organized list

ounce

parabolic curves

parallel

parallelogram

parentheses

pattern

percent

penny

pentagon

perfect cubes

perfect squares

perimeter

perpendicular

perpetual calendar

pi

pictograph

pint

place value

plus sign

points

polygon

polyhedron

positive numbers

post meridiem (p.m.)

pounds

prediction

prime number

probability

product

proper fraction

property

protractor

pyramid

quadrilateral

quart

quarter

quotient

radius

ray

rectangle

rectangular prism

reflections

regrouping

remainder

right angle

right/left

right triangle

Roman numerals

rotations

rounding

row

sales tax

scales on graphs

scaling on map

seasons

seconds (time)

sequence

set

shape

short

shorter

shortest

sides

similar

single-digit numbers

sixteenths

size

small

smaller

smallest

solid

some more stories

some went away stories

sort

sphere

spinner

square

square number

square root

square units

story problem

straight angle

subtraction

sum

supplementary angles

survey

symbol

symmetry

tablespoon

tall

taller

tallest

tallying

tangrams

tape measure

tax

teaspoon

temperature

tenths

thermometer

third

thousand

time

time zone

today

tomorrow

ton

translation

trapezoid

triangle

triangular prism

twelfths

unit

Venn diagram

vertical

vertices

vertex

volume

week

weekdays

weekends

weight

whole

width

yards

year

yesterday

zero property of multiplication