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1st Grade Math Vocabulary For Educators
1st Grade Florida State Math Vocabulary For Educators
44
Mathematics
1st Grade
05/09/2012

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Term
Addend
Definition
Any number being added.
Term
Algorithm
Definition
An algorithm is a specific set of instructions for carrying out a procedure or solving a problem, usually with the requirement that the procedure terminate at some point.
Term
Associative Property
Definition
The way in which three or more numbers are grouped for addition or multiplication does not change their sum or product, respectively [e.g., (5 + 6) + 9 = 5 + (6 + 9) or (2 x 3) x 8 = 2 x (3 x 8)].
Term
Attribute
Definition
A quality or characteristic, such as color, thickness, size, and shape.
Term
Capacity
Definition
The amount of space that can be filled in a container. Both capacity and volume are used to measure three-dimensional spaces.
Term
Circle
Definition
A closed plane figure with all points of the figure the same distance from the center.
Term
Circle
Definition
A closed plane figure with all points of the figure the same distance from the center. The equation for a circle with center (h, k) and radius r is: (x - h)2 + (y - k)2 = r2
Term
Commutative Property
Definition
The order in which two numbers are added or multiplied does not change their sum or product, respectively (e.g., 2 + 3 = 3 + 2, or 4 × 7 = 7 × 4).
Term
Compose
Definition
To form by putting together (e.g., a geometric figure or a number).
Term
Conceptual Understanding
Definition
Comprehension of mathematical concepts, operations, and relations. Students with conceptual understanding know why a mathematical idea is important, connect mathematical topics with each other and with other subject areas, and recognize the contexts in which a mathematical idea is useful.
Term
Congruent
Definition
Figures or objects that are the same shape and size.
Term
Cube
Definition
Solid figure with six congruent, square faces
Term
Decompose
Definition
To separate into parts or elements (e.g., geometric figures or numbers).
Term
Difference
Definition
A number that is the result of subtraction
Term
Digit
Definition
A symbol used to name a number. There are ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. In the number 49, 4 and 9 are digits.
Term
Focus
Definition
A special point used to construct and define a conic section.
Term
Geometry
Definition
The branch of mathematics that explores the position, size, and shape of figures.
Term
Inverse Operation
Definition
An action that undoes a previously applied action. For example, subtraction is the inverse operation of addition.
Term
Isosceles triangle
Definition
A triangle with at least two congruent sides and two congruent angles. An equilateral triangle is a special case of an isosceles triangle having not just two, but all three sides and angles equal.
Term
Length
Definition
A one-dimensional measure that is the measurable property of line segments.
Term
Magnitude
Definition
The amount of a quantity. Magnitude is never negative.
Term
Mean
Definition
There are several statistical quantities called means, e.g., harmonic mean, arithmetic mean, and geometric mean. However, “mean” commonly refers to the arithmetic mean that is also called arithmetic average. Arithmetic mean is a mathematical representation of the typical value of a series of numbers, computed as the sum of all the numbers in the series divided by the count of all numbers in the series. Arithmetic mean is the balance point if the numbers are considered as weights on a beam.
Term
Model
Definition
To represent a mathematical situation with manipulatives (objects), pictures, numbers or symbols.
Term
Multiples
Definition
The numbers that result from multiplying a given whole number by the set of whole numbers.
Term
Non-Routine Problem
Definition
A problem that can be solved by more than one way, rather than a set procedure, having multiple decision points and multiple steps (grade level dependent).
Term
Nonstandard Units Of Measure
Definition
Objects such as blocks paper clips, crayons, or pencils that can be used to obtain a measure.
Term
Number Line
Definition
A line of infinite extent whose points correspond to the real numbers according to their distance in a positive or negative direction from a point arbitrarily taken as zero.
Term
Numeral
Definition
A symbol representing a number. Hindu-Arabic numerals (0-9) are the ones most commonly used today. Other types include Egyptian, Babylonian, Mayan, Greek, and Roman numerals.
Term
Operation
Definition
Any mathematical process, such as addition, subtraction, multiplication, division, raising to a power, or finding the square root.
Term
Pattern
Definition
A predictable or prescribed sequence of numbers, objects, etc. Patterns and relationships may be described or presented using multiple representations such as manipulatives, tables, graphics (pictures or drawings), or algebraic rules (functions).
Term
Plane
Definition
An infinite two-dimensional geometric surface defined by three non-linear points or two distance parallel or intersecting lines.
Term
Set
Definition
A set is a finite or infinite collection of distinct objects in which order has no significance.
Term
Side
Definition
The edge of a polygon (e.g., a triangle has three sides), the face of a polyhedron, or one of the rays that make up an angle.
Term
Similarity
Definition
A term describing figures that are the same shape but are not necessarily the same size or in the same position.
Term
Solid Figures
Definition
Three-dimensional figures that completely enclose a portion of space (e.g., a rectangular prism, cube, sphere, right circular cylinder, right circular cone, and square pyramid).
Term
Sphere
Definition
A three-dimensional figure in which all points on the figure are equidistant from a center point.
Term
Square
Definition
A rectangle with four congruent sides; also, a rhombus with four right angles.
Term
Standard Algorithm (For Division)
Definition
A procedure for finding a two- or more-place quotient of a division problem when a two or more-step procedure is used (steps include dividing, multiplying, comparing, subtracting, and regrouping).
Term
Sum
Definition
The result of adding numbers or expressions together.
Term
Triangle
Definition
A polygon with three sides.
Term
Unit
Definition
A determinate quantity (as of length, time, heat, or value) adopted as a standard of measurement.
Term
Vertex
Definition
The point common to the two rays that form an angle; the point common to any two sides of a polygon; the point common to three or more edges of a polyhedron.
Term
Weight
Definition
The force with which a body is attracted to Earth or another celestial body, equal to the product of the mass of the object and the acceleration of gravity.
Term
Whole Number
Definition
The numbers in the set {0, 1, 2, 3, 4, ...}
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