Investigations Math Homework Help-Grades 2&3 Type GRADE2FT or GRADE3FT for username/password to enter site http://www.pearsonsuccessnet.com
CMT Math Handbook (Guide for Teachers, Parents and Students) http://www.csde.state.ct.us/public/cedar/assessment/cmt/resources.htm
Virtual Library of Math Manipulatives (K-5) http://matti.usu.edu/nlvm/nav/topic_t_1.html
Hundreds Number Board (Skip Counting, Multiples) http://www.primarygames.co.uk/pg2/splat/splatsq100.html
Math Flash Cards - Click on your Grade Level http://www.mathfactcafe.com/view/?t=F
Fun math games and practice http://www.mathplayground.com
Investigations in Number, Data and Space http://investigations.terc.edu
Click on your grade level. Next, click on Number & Operations. Scroll down to Base ten Addition or Base Ten Subtraction. Practice regrouping with a visual model. National Library of Virtual Manipulatives (great site for regrouping)
Multiplication Games