For extra multiplication practice try this: http://multiplication.com/
For practice with sight words try this: http://www.theschoolbell.com/Links/Dolch/Contents.html
For some educational games try this: http://edweb.tusd.k12.az.us/ekowalcz/math/elementary_web_sites.htm
More games! http://quizhub.com/quiz/quizhub.cfm
For National Geographic: http://kids.nationalgeographic.com/
For some interesting things to look at: http://kids.discovery.com/
For information about Dan Gutman: http://www.dangutman.com/