This page contains the following information:
The National Library of Virtual Manipulatives (NLVM) is an NSF supported project
that began in 1999 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-12 emphasis). The project includes
dissemination and extensive internal and external evaluation.
||National Science Foundation
Award Number 9819107
Learning and understanding mathematics, at every level, requires student
engagement. Mathematics is not, as has been said, a spectator sport. Too
much of current instruction fails to actively involve students. One way
to address the problem is through the use of manipulatives, physical objects
that help students visualize relationships and applications. We can now
use computers to create virtual learning environments to address the same
There is a need for good computer-based mathematical manipulatives and interactive learning
tools at elementary and middle school levels. Our Utah State University
team is building Java-based mathematical tools and editors that allow
us to create exciting new approaches to interactive mathematical instruction.
The use of Java as a programming language provides platform independence
and web-based accessibility.
The NLVM is a resource from which teachers may freely draw to
enrich their mathematics classrooms. The materials are also of importance for
the mathematical training of both in-service and pre-service teachers. The
library is actively being extended and refined through projects including the
a project to develop interactive online learning units for mathematics.
You may see information about the following revisions:
To view the National Library of Virtual Manipulatives, you must use
a Java-enabled web browser. We have verified that
the virtual manipulatives (Java applets) run in the following web browsers:
- Windows Vista - Internet Explorer 7.0
- Windows XP - Firefox 1.0, 1.5, and 2.0
- Windows XP - Internet Explorer 6.0 and 7.0
- Windows 2000 - Internet Explorer 5.5
- Windows 2000 - Netscape 4.08, 4.75, and 6.1
- Mac OS X - Camino 0.8
- Mac OS X - Firefox 1.0 and 1.5
- Mac OS X - Netscape 7.1
- Mac OS X - Safari 1.2.3
If you find that the website works or doesn't work in other web
browsers, please email us at nlvm AT usu DOT edu
and we will add it to this list.
Reporting Problems with the Website
NOTE: If you are experiencing
difficulties accessing the NLVM from a Macintosh, please download, install, and
try the latest Java Virtual Machine
before contacting us.
If you experience problems accessing the site, please let us know
by emailing nlvm AT usu DOT edu. When
contacting us, please include the following information:
- Operating system name and version (Windows 2000, XP, Vista / Mac OS X 10.3, 10.4, 10.5, etc.)
- Web browser name and version (Firefox 1.5, 2.0; Internet Explorer 6.0, 7.0; Netscape; Opera; Safari, etc.)
- Internet connection speed (28.8, 56.6, Cable, LAN/T1, etc.)
- URL of the page you found the problem on
- Description of the problem you experienced
We will respond with a fix or explanation as soon as possible.