From the website: "ABCya.com is the leader in free educational kids computer games and activities for elementary students to learn on the web. All children's educational computer activities were created or approved by certified school teachers.
All educational games are free and are modeled from primary grade lessons and enhanced to provide an interactive way for children to learn."
For grades K-5, includes both math and language arts.
- McGraw Hill Education Glenco.com
Select grade level, background list, such as game board, story board, or workmat, then select the manipulative. You can also set a timer, change colors, work a stop watch, use a protractor, and more.
- National Library of Virtual Manipulatives
From the website: The NLVM has developed "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."
- NCTM Illuminations: Resources for Teaching Math
From the website: Illuminations works to serve you by increasing access to quality standards-based resources for teaching and learning mathematics, including interactive tools for students and instructional support for teachers. Illuminations is a project designed by the National Council of Teachers of Mathematics (NCTM) and supported by the Verizon Foundation.
NCTM serves as a content partner for Thinkfinity, the Verizon Foundation's free online professional learning community, where Illuminations is the primary contributor of resources for teaching and learning mathematics for grades pre-K—12."
- Interactivate Activities by Shodor
For grades 3-12 as well as undergraduate, there are interactive games for algebra, calculus, fractions, graphs, geometry, probability, statistics, and more.
From the website: "Established in Durham, NC in 1994, Shodor is a nonprofit organization serving students and educators by providing materials and instruction relating to computational science (scientific, interactive computing)."
- Wolfram Demonstrations Project
Select the grade, select the math topic, download a free Wolfram CDF player before exploring these math games.
From the Website: "... the Wolfram Demonstrations Project is an open-code resource that uses dynamic computation to illuminate concepts in science, technology, mathematics, art, finance, and a remarkable range of other fields."