is for ACUTE ANGLE

An acute angle is an angle with a measure of less than 90 degrees. For example, when a clock shows 1 o'clock, the minute and hour hands show an acute angle. 

is for BAR GRAPH

A bar graph is a diagram that shows data about something using bars. For example, you could use a bar graph for comparing test scores or to represent what kinds of pets the people in your class have. 

is for CIRCUMFERENCE

The circumference is the distance around a circle. An example of circumference is the measurement around a ferris wheel.

is for DIVISION

Division is an operation that determines how many times one number can fit inside another number. For example, if four friends bought candy bar that had 16 pieces in it. You would use division to figure out how many pieces each person would get if it was split evenly.

is for EQUILATERAL TRIANGLE

An equilateral triangle is a triangle with all three sides equal in length. In an equilateral triangle, all three sides have the same measure. An example of a equilateral triangle is one face of a pyramid. 

is for FACTOR TREE

A factor tree is a way to find the prime factorization of a number. The original number is written as a product of 2 factors, then each of these factors is written as a product of 2 factors and so on until all the factors are prime. 

is for GEOMETRY

Geometry is the study of angles and their measures, lines, rays, and different solid shapes. For example, when you learn about different kinds of shapes you are using geometry. 

is for HEXAGON

A hexagon is a polygon with six sides and six angles. For example, a beehive is constructed of hexagons. 

is for ISOSCELES TRIANGLE 

An isosceles triangle is a triangle with at least two sides that have the same length. One example is how an ice cream cone appears when viewed from the side. 

is for JAR OF JELLYBEANS

n math, a jar of jellybeans can be used for estimation. Estimating is having an educated guess. One example is if your class is having a contest about who could estimate how many jellybeans are in a jar. 

is for KILOMETER

A kilometer is a measurement in the metric system used to measure distance. A kilometer is smaller than a mile. It is commonly used in other countries, like when driving in England. 

is for LINE OF SYMMETRY

A line of symmetry is where you can split something in half and it will be the same on both sides. For example, a butterfly has a line of symmetry in the middle of its body. 

is for MULTIPLICATION

Multiplication is the process of adding a number to itself a certain number of times. 

is for NUMBER SENTENCE

A number sentence is an equation or inequality expressed using numbers and mathematical symbols. 

is for OBTUSE ANGLE

An obtuse angle is an angle with a measure between 90 degrees and 180 degrees. For example, each angle of a regular octagon, like a stop sign, is an obtuse angle.

is for PIE CHART

A pie chart is a type of graph in which a circle is divided into sectors tha each represent a proportion of the whole. A pie chart can be used for showing data or results from a survey.