http://www.transum.org/software/sw/Starter_of_the_day/Similar.asp?ID_Topic=29 http://education.jlab.org/placevalue/index.html http://www.toonuniversity.com/flash.asp?err=496&engine=9 http://edhelper.com/place_value.htm http://www.funbrain.com/tens/index.html http://www.gamequarium.com/placevalue.html
http://www.gamequarium.com/placevalue.html http://www.mrnussbaum.com/placevaluepirates1.htm http://www.learningbox.com/Base10/BaseTen.html
If you go here: http://www.homeschoolspot.com/showthread.php?t=20389&highlight=counting+board and read through, it tells how I learned to do place value when I was in the classroom. It is, imo, the most clear, fantastic way to teach this concept. I was amazed with how well it worked with my special needs students!!!