Several experiments were researched to gather information on the value and application of virtual manipulatives. A list of links to dynamic virtual manipulatives has been provided. These are just a small depiction of what is available and are some of the more popular sites for the use of virtual manipulatives.

• National Library of Virtual Manipulatives - http://nlvm.usu.edu/en/nav/vlibrary.html
• Base-10 blocks - http://nlvm.usu.edu/en/nav/frames_asid_154_g_1_t_1.html
• National Council of Teachers of Mathematics Illuminations - http://illuminations.nctm.org/
  
• Pattern blocks - http://nlvm.usu.edu/en/nav/frames_asid_169_g_1_t_2.html?open=activities
  
• Shodor Education Foundation Curriculum Materials - http://www.shodor.org/curriculum/
  
• Tangrams -  http://nlvm.usu.edu/en/nav/frames_asid_268_g_1_t_3.html?open=activities
  
• Virtual clocks - http://nlvm.usu.edu/en/nav/frames_asid_317_g_1_t_4.html
  
• Virtual geoboards - http://nlvm.usu.edu/en/nav/frames_asid_277_g_1_t_3.html?open=activities 
• “Pythagoras’ Theorem” - www.keypress.com/sketchpad/java_gsp/PIT.HTM
• Manipula Math with JAVA - www.ies.co.jp/math/java/index.html 

• Algebra Tiles” pages - www.coe.tamu.edu/~strader/Mathematics/Algebra/AlgebraTiles/AlgebraTiles1.html and /AlgebraTiles2.html
• The Geometry Applet,” version 2.2 - aleph0.clarku.edu/~djoyce/java/Geometry/Geometry.html