Grade 3Glossary
 algorithm
 Unit 3 Lesson 6
A set of steps that works every time as long as the steps are carried out correctly.
 angle in a shape
 Unit 7 Lesson 1
The space where 2 sides of a shape meet.
 area
 Unit 2 Lesson 3, Unit 2 Lesson 4

The number of square units that cover a flat figure without gaps or overlaps.
 array
 Unit 1 Lesson 16

An arrangement of objects in rows and columns. Each column must contain the same number of objects as the other columns, and each row must have the same number of objects as the other rows.
 bar graph
 Unit 1 Lesson 1
A way to show how many in each group or category using the length of rectangles.
 denominator
 Unit 5 Lesson 7
The bottom part of a fraction that tells how many equal parts the whole was partitioned into.
 division
 Unit 4 Lesson 2
Finding the number of groups or finding the size of each group when we share into groups of equal size.
 divisor
 Unit 4 Lesson 4
The number we are dividing by which can represent the size of the groups or the number of groups.
 equation
 Unit 1 Lesson 13

A statement that includes an equal sign (=). It tells us that what is on one side of the sign is equal to what is on the other side.
 equivalent fractions
 Unit 5 Lesson 10
Fractions that have the same size and describe the same point on the number line. For example,
and are equivalent fractions.  expanded form
 Unit 3 Lesson 1
A specific way of writing a number as a sum of hundreds, tens, and ones.
Expanded form writes a number as a sum of the value of each digit. Example: 482 written in expanded form is
.  expression
 Unit 1 Lesson 10

An expression has at least 2 numbers and at least one math operation (such as addition, subtraction, multiplication and division).
 factor
 Unit 1 Lesson 13
When we multiply two whole numbers to get a product, each of those numbers is a factor of the product.
 fraction
 Unit 5 Lesson 1
A number used to describe the parts of a whole that has been partitioned into equal parts.
 gram
 Unit 6 Lesson 6

A weight unit that is part of the metric measurement system.
There are 1,000 grams in a kilogram.
 key
 Unit 1 Lesson 1
The part of a picture graph that tells what each picture represents.
 kilogram
 Unit 6 Lesson 6

A weight unit that is part of the metric measurement system.
There are 1,000 grams in a kilogram.
 liquid volume
 Unit 6 Lesson 7
The amount of space that a liquid takes up.
 liter
 Unit 6 Lesson 7
A liquid volume unit that is part of the metric measurement system.
 mixed number
 Unit 6 Lesson 1
A number expressed as a whole number and a fraction less than 1.
 multiplication
 Unit 1 Lesson 9
The operation that tells you the total number of objects when you have a certain number of equal groups.
 numerator
 Unit 5 Lesson 7

The top part of a fraction that tells how many of the equal parts are being described.
 parentheses
 Unit 2 Lesson 12
Grouping symbols that can be used in expressions or equations, such as:
.  partition
 Unit 5 Lesson 1
Another word we can use to say something was split into pieces or parts.
 perimeter
 Unit 7 Lesson 6
A perimeter is the boundary of a flat shape. We can find the length of the perimeter by finding the sum of the lengths of the sides of the shape.
 picture graph
 Unit 1 Lesson 1
A way to show how many in each group or category using pictures of the objects or symbols.
 product
 Unit 1 Lesson 13, Unit 1 Lesson 15
The result of multiplying some numbers.
 quotient
 Unit 4 Lesson 6
The result in a division equation.
 right angle in a shape
 Unit 7 Lesson 1
The angle in the corner of a square or a rectangle.
 rounding
 Unit 3 Lesson 14

A formal way to say which number a given number is closer to. For example, for 182, the number 180 is the closest multiple of ten and 200 is the closest multiple of a hundred. We can round 182 to 180 (if rounding to the nearest ten) or 200 (if rounding to the nearest hundred).
 scaled bar graph
 Unit 1 Lesson 5
A bar graph marked in multiples of some number other than 1.
 scaled picture graph
 Unit 1 Lesson 3
A picture graph where each picture represents an amount other than 1.
 square centimeter
 Unit 2 Lesson 6

A square with side lengths of 1 centimeter.
 square foot
 Unit 2 Lesson 7

A square with side lengths of 1 foot.
 square inch
 Unit 2 Lesson 6
A square with side lengths of 1 inch.
 square meter
 Unit 2 Lesson 7
A square with side lengths of 1 meter.
 unit fraction
 Unit 5 Lesson 3
A fraction with 1 in the numerator.
 weight
 Unit 6 Lesson 6, Unit 6 Lesson 8
How heavy something is.