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Virtual Manipulative

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Content Provider

The National Library of Virtual Manipulatives is a three-year NSF supported project to develop a library of uniquely interactive, web-based virtual manipulatives or concept tutorials, mostly in the form of Java applets, for mathematics instruction (K-8 emphasis). The project includes dissemination and extensive internal and external evaluation. For more information, please visit http://nlvm.usu.edu/en/nav/vlibrary.html.

Description

This interactive web-based resource challenges students to factor then determine the greatest common factor and least common multiple of two random numbers.

Credits

Principal Investigators
Larry Cannon
Jim Dorward
Bob Heal
Leo Edwards

Java Applet Programming
Ethy Cannon
Joel Duffin
David Stowell
Zeke Susman
Richard Wellman
Jennifer Youngberg

Web Site Programming
Joel Duffin

Related Academic Standards

New York State

6.NS.4 Find the greatest common factor of two whole numbers less than or equal to 100 and the least common multiple of two whole numbers less than or equal to 12. Use the distributive property to express a sum of two whole numbers 1-100 with a common factor as a multiple of a sum of two whole numbers with no common factor. For example, express 36 + 8 as 4 (9 + 2).

MST3.5.N.12 Students recognize that some numbers are only divisible by one and themselves (prime) and others have multiple divisors (composite.)

MST3.5.N.13 Students calculate multiples of a whole number and the least common multiple of two numbers.

MST3.5.N.15 Students find the common factors and the greatest common factor of two numbers.

MST3.7.N.8 Students find the common factors and greatest common factor of two or more numbers.