Interactive Math Vocabulary contains 158 vocabulary words specific to 3rd grade Common Core Math. Each word contains an illustration and definition.

Each vocabulary word has its own flap, and each flap has 3 parts.

Explain it! - Under the Explain it! flap, students explain the word in a way that makes sense to them. This could be words, pictures, or numbers.

Here's How it Works! - This is where students apply the word and how it works mathematically.

How might this be used in the real world? - We want students to think mathematically beyond math class, so this requires them to brainstorm ways in which the concept might be used in the world they know.

Included words:

acute angle

add

addend

algorithm

a.m.

analog clock

angle

area

array

associative property of addition

associative property of multiplication

attribute

axis

bar diagram

bar graph

centimeter

circle

classify

commutative property of addition

commutative property of multiplication

compare

compose

composite figure

cone

congruent

cube

customary units

cylinder

data

decagon

decompose

denominator

difference

digit

digital clock

distributive property

divide

dividend

divisor

double

elapsed time

endpoint

equal

equal groups

equation

equivalent

equivalent fractions

estimate

evaluate

even number

expanded form

expression

fact family

factor

foot

formula

fraction

frequency table

gram

half hour

half inch

hexagon

hour

hundreds

identity property of addition

identity property of multiplication

inch

perpendicular lines

inverse operations

is equal to

is greater than

is less than

key

kilogram

length

line

line of symmetry

line plot

line segment

fluid volume (capacity)

liter

mass

meter

metric system

milliliter

minute

model

multiple

multiply (multiplication)

number line

number sentence

numerator

obtuse angle

octagon

odd number

operation

parallel lines

parallelogram

parenthesis

partition

pattern

pentagon

perimeter

period

perpendicular lines

pictograph

picture graph

place value

plane figure

p.m.

point

polygon

product

quadrilateral

quarter hour

quarter inch

quotient

ray

rectangle

rectilinear figure

regroup

related facts

remainder

repeated subtraction

rhombus

right angle

right triangle

round

scale

seconds

sequence

sphere

square

square unit

standard form

subtract

sum

survey

symbol

tally chart

tally marks

thousands

tiling

time interval

timeline

trapezoid

triangle

unit fraction

unknown

variable

vertex

volume

whole number

word form

yard

zero property of multiplication

3-dimensional

2-dimensional