13 Glossary
Acute triangle – a triangle with all angles measuring less than 90 degrees
Addition symbol – an operation that combines two or more numbers or groups of objects (component parts: addend + addend = sum)
Arithmetic patterns – a pattern that changes by the same rate, such as adding or subtracting the same value each time
Assessment – Conceptual understanding is knowing more than isolated facts and methods; it is understanding mathematical ideas, and having the ability to transfer knowledge into new situations and apply it to new contexts.
Associative Property of Multiplication – when three or more numbers are multiplied, the product is the same regardless of the grouping of the factors
Base ten number system – Our everyday number system is a Base-10 system and has 10 digits to show all numbers 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
Cardinal numbers – say how many of something there are
Cardinality – the last number word said when counting, tells how many
Categorical data – a collection of information that can be divided into specific groups, such as favorite color, types of food, favorite sport, etc.
Clusters – groups of related standards
Communication – Mathematics communication is both a means of transmission and a component of what it means to “do” mathematics.
Commutative Property of Addition – numbers can be added in any order and you will still get the same answer
Commutative Property of Multiplication – when two numbers are multiplied, the product is the same regardless of the order of the factors
Computational fluency – using efficient and accurate methods for computing
Connections – the ability to understand how mathematical ideas interconnect and build on one another
Conservation of length – if an object is moved, its length does not change
Contextualize – taking the abstract mathematical representation and putting into context
Data analysis – processing data to find useful information that will help make decisions
Decontextualize – taking a context and representing it abstractly
Defining – attributes that must always be present in order to create that shape
Denominator – how many equal part in the whole amount
Difference – the result of subtraction; the inverse of addition
Distributive Property of Multiplication over Addition – multiply a sum by multiplying each addend separately and then add the products
Dividend – the amount we want to divide up
Divisor – the number we divide by
Domains – larger groups of related standards. Domains are the big idea.
Emergent mathematics – the earliest phase of development of mathematical and spatial concepts
Equal sign – a relational symbol used to indicate equality
Equilateral triangle – a triangle in which all sides are the same length
Equivalence – equivalent fractions have the same value, even though they may look different. For example 12 and 24 are equivalent, because they are both “half”
Expanded notation – writing a number and showing the place value of each digit
Factor – numbers multiplied