http://www.visualfractions.com/

http://www.coolmath.com/

http://www.funbrain.com/measure/index.html

http://www.rickyspears.com/rulergame/

linear measurement games

http://www.gamequarium.com/measurement.html

practice that covers the entire curriculum for 6th grade

http://chesterfield.k12.va.us/htm/parents_pages/resources/math/msm1_web/index.html

http://www.explorelearning.com/

http://nlvm.usu.edu/en/nav/vlibrary.html

http://illuminations.nctm.org/

Lots of interactive activities!

http://www.shodor.org/interactivate

http://guest.portaportal.com/k12math

3 levels of order of operations problems

http://www.funbrain.com/algebra/index.html

http://connectedmath.msu.edu/CD/Grade6/Locker/index.html

movie clips,quizzes, games

http://www.brainpop.com/

http:///www.arcademicskillbuilders.com

http://www.mathplayground.com

tests and pre-tests

http://amby.com/educate/ord-op

http://www.glencoe.com/sec/math/msmath/mac04/course1/self_check_quiz/index.php/va

http://www.studyisland.com/

http://www.rockingham.k12.va.us/

http://www.myskillstutor.com

http://education.jlab.org/solquiz/index.html

http://www.counton.org/games/mathonaire/

http://www.learn4good.com/games/puzzle/boat.htm