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array

The arrangement of the units of a number in rows and columns

capacity

The amount a container can hold.

estimate

A close guess of the actual value; usually with some thought or calculation involved.

grid

Horizontal and vertical lines on a map.

hexagon

A polygon with 6 sides and 6 angles.

frequency

The number of times an event occurs.

stem

A tens digit in a stem-and-leaf-pllot

trundle wheel

A wheel that rolls to determine long distances.

hundredth

One of one hundred equal parts.

obtuse triangle

A triangle that has one angle greater than a right angle.

octagon

A polygon with eight sides.

ordered pair

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

square

A quadrilateral with two pairs of parallel sides, four equal sides, and four right angles.

pint (pt)

A customary unit for measuring capacity; equal to 2 cups.

place value

Determines the value of a digit in a number, based on the location of the digit.

plane

A flat surface that goes on and on in all directions.

pictograph

A graph that uses pictures to show and compare information.

right triangle

A triangle with one right angle.

scale

The numbers on a bar graph that help you read the number each bar shows.

schedule

A table that lists activities or events and the times that they happen.