analog

time shown on a clock or watch with hour and minute hands (not digital)

cube

a rectangular solid with 6 congruent square faces

face

a flat surface (or plane) that is one side of a solid figure

hexagon

a 6-sided figure

line

a straight path extending in both directions with no endpoints

line of symmetry

a line that divides a figure into two halves that are mirror images of each other

line segment

part of a line with two endpoints

number sentence

a math equation with numbers

octagon

an 8-sided shape

ordered pair

a pair of numbers used to locate a point on a grid

parallel lines

lines that never intersect and are always the same distance apart

pentagon

a 5-sided shape

perpendicular lines

two lines that intersect to form right angles

pictograph

a graph that uses pictures to show and compare information

pyramid

a solid figure with a polygon base and triangular sides that meet at a single point

sphere

a solid figure that is also called a ball

tally chart

a table that uses tally marks to record data

addend

a number that is being added

array

a rectangular arrangement of objects in equal rows or columns

cone

a solid figure that has a circular base and one vertex

cylinder

a solid figure with 2 circular bases that are parallel and congruent

edge

the line segment where 2 faces of a solid figure meet

equivalent

having the same value

fact family

a set of related addition/subtraction or multiplication/division equations that use the same numbers

inequality

a math sentence that contains a symbol showing that the terms on either side are unequal

perimeter

the distance around a figure

quadrilateral

a polygon with 4 sides

volume

the amount of space that a solid figure can hold

transformation

moving a figure to a new position by slide (translation), flip (reflection), or turn (rotation)

whole number

any of the counting numbers

translation

moving a figure without turning or flipping it (slide)

rotation

moving a figure by turning it around a fixed point (turn)

congruent

figures with the same size and shape