A number model in math is a sentence that illustrates how the parts of a number story are related. The equation may include addition, subtraction, division and multiplication and may be expressed as words or in number fo... More »

A verbal model is a representation of a math problem in words. A verbal model is the step between translating a verbal phrase in math to a math model. More »

The bar model is a visual representation of a number using unit cubes, as stated on SplashMath.com. One cube is equal to one. One line is equal to 10 cubes. One sheet is equal to 100 cubes or 10 lines. More »

www.reference.com Math Data Graphs

In math, a composite number is a whole number that can be divided evenly by a number other than itself and one. If a number cannot be divided evenly in this way, it is called a prime number. More »

www.reference.com Math Numbers

An array in fourth grade math is a visual model used to help provide an understanding of multiplication concepts. For example, a multiplication problem can be represented with an array of shapes in rows and columns that ... More »

www.reference.com Math Numbers

Pi is a mathematical constant and irrational number representing the ratio of a circle's circumference to its diameter with a value of approximately 3.1416. Even though mathematicians using computers are able to calculat... More »

In mathematics, a prime number is any whole number greater than one that has no positive factors other than one and itself. For example, the number 17 is prime, because its only factors are one and 17. More »