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Revision History

This page contains information about the following revisions:

July 28, 2007

Published the French version of the NLVM. Each page of the NLVM allows you to switch to English, Spanish or French. You may also visit the French version of the NLVM by clicking Bibliothèque virtuelle en mathématiques.

Updated virtual manipulatives:

Improved text fields. You can now select the text inside the text fields in many of our applets.

April 27, 2006

Published the Spanish version of the NLVM. Each page of the NLVM now allows you to switch between English and Spanish. You may also visit the Spanish version of the NLVM by clicking Biblioteca Nacional de Manipuladores Virtuales.

Updated virtual manipulatives:

January 24, 2006

Updated virtual manipulatives:

January 10, 2006

Updated the navigation pages. The banner at the top now more clearly identifies the name of the website. A link to our eNLVM website is now available.

Updated virtual manipulatives:

September 30, 2005

Updated virtual manipulatives:

Added activities for Coin Tossing.

April 26, 2005

Added virtual manipulatives:

Updated virtual manipulatives:

Added activities for Tessellations.

February 4, 2005

Added virtual manipulatives:

Updated virtual manipulatives:

Added Instructions and Parent/Teacher pages for all manipulatives.

Added activities for several manipulatives.

Updated the Purchase Info page.

Updated the Legal Notices page.

January 30, 2003

Added virtual manipulatives:

Added activities for the following manipulatives:

  • Geoboard (Geometry PreK-2, 3-5, 6-8, 9-12; Measurement 3-5, 6-8, 9-12)
  • Circular Geoboard (Geometry 6-8, 9-12)
  • Coordinate Geoboard (Geometry 6-8, 9-12)
  • Ladybug Leaf (Geometry PreK-2, 3-5)
  • Tangrams (Geometry PreK-2, 3-5, 6-8, 9-12; Numbers and Operations 6-8)
  • Transformations - Composition (Geometry 9-12)
  • Transformations - Dilation (Geometry 3-5, 6-8, 9-12)
  • Transformations - Reflection (Geometry 3-5, 6-8, 9-12)
  • Transformations - Rotation (Geometry 3-5, 6-8, 9-12)
  • Transformations - Translation (Geometry 3-5, 6-8, 9-12)

Removed links to under construction pages. Previously when you clicked on a teacher or activities menu item, an "Under Construction" page would be displayed. This resulted in people giving up on trying the links. Now, menu items only appear when they link to content.

Modified design so activities or instructions open automatically. Feedback indicated that some people were unsure of how to use the applets and wished that information was displayed immediately so they did not have to go looking for it. Based on that feedback, the design was modified so that some manipulatives open up with the instructions or an activity displaying immediately.

Added linking options. You may now create links to manipulative pages that also display the instructions, teacher, or activities page. In a Windows browser the base URL for a manipulative is displayed in the address window at the top of the virtual manipulative page. In a Macintosh web browser the base URL for a manipulative can be seen by choosing Page Info from the View menu. The base URL is everything before the question mark character. You may create links that open the instructions, teacher or activities page by using syntax in the table that follows. The examples shown must be preceded by

Syntax Explanation Example
<Base URL> Manipulative page only. frames_asid_282_g_3_t_3.html
<Base URL>?open=instructions Manipulative and instructions pages. frames_asid_282_g_3_t_3.html?open=instructions
<Base URL>?open=teacher Manipulative and teacher pages. frames_asid_282_g_3_t_3.html?open=teacher
<Base URL>?open=activities Manipulative page and first activity page. frames_asid_282_g_3_t_3.html?open=activities
<Base URL>?open=activities &index=<activity index> Manipulative page and activity page specified by the index value. 0 is the index of the first activity. frames_asid_282_g_3_t_3.html?open=activities&index=2

Fixed browser-specific bugs. The NLVM website previously was not viewable in browsers running Mac OS X. It now is.

April 26, 2002

Updated and added virtual manipulatives:

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