Interactive Mathematics Websites

National Library of Virtual Manipulatives
http://nlvm.usu.edu/en/nav/vlibrary.html

Interactive virtual manipulatives based on the NCTM standards.

NCTM Illuminations
http://illuminations.nctm.org/

Interactive math tools and activities.

Base 10 Blocks
http://ejad.best.vwh.net/java/b10blocks/b10blocks.html

Teaching tools, tests, games, and much more.

Math Glossary
http://www.hbschool.com/glossary/math2/index1.html

Glossary for grades K-6.

Kidport: Mathematics

Kindergarten Math Games
http://www.kidport.com/GradeK/Math/MathIndex.htm

First Grade Math Games
http://www.kidport.com/Grade1/Math/MathIndex.htm

Second Grade Math Games
http://www.kidport.com/Grade2/Math/MathIndex.htm

Third Grade Math Games
http://www.kidport.com/Grade3/Math/MathIndex.htm

Fourth Grade Math Games
http://www.kidport.com/Grade4/Math/MathIndex.htm

Fourth Grade Math Games
http://www.kidport.com/Grade4/Math/MathIndex.htm

Fifth Grade Math Games
http://www.kidport.com/Grade5/Math/MathIndex.htm

Sixth Grade Math Games
http://www.kidport.com/Grade6/Math/MathIndex.htm

Math Zone
http://www.mathszone.co.uk/  

Select KS1/KS2 Tab for Primary Grades and KS3/KS4 Tab for Intermediate.

BBC Starship Maths
http://www.bbc.co.uk/schools/starship/maths/index.shtml

Primary Math Games
http://www.primarygames.com/math.htm

Discovering Coin Values
http://www.toonuniversity.com/flash.asp?err=569&engine=

Exact Change Please
http://www.tennessee.gov/tdfi/java/game/ExactChangePlease/index.html

Money Program
http://ejad.best.vwh.net/java/money/money.html

Pattern Blocks
http://ejad.best.vwh.net/java/patterns/patterns_j.shtml

Funbrain Math Games
http://www.funbrain.com/cgi-bin/getskill_s.cgi?A1=selects&A2=math&A4=0&A7=0

For Grades K-9

Tessellation Town
http://www.mathcats.com/explore/tessellationtown.html