(Sample link) White House for Kids http://www.whitehouse.gov/kids/whlife/index.html
(Sample link) National Geographic for Kids http://www.nationalgeographic.com/kids/
(Sample link) Fun activities - by girls....for girls. http://www.missoandfriends.com/
Fun activities.. I recommend Math Baseball to review Multiplication Facts http://www.funbrain.com
There are some great worksheets to print and have your child practice. I use them in the classroom!! http://www.tlsbooks.com
This is a very interesting web site. The online books are quite interesting, even if they're easy. The information is terrific. Adam Ant is a good game to review perimeter. To get to the student games and online books, go to Student Resources and click on online lessons. http://www.beaconlearningcenter.com
This is a website I use to print off math fact worksheets. It's great! You can custom design your own worksheets. http://www.mathfactcafe.com