Check out some of these websites. It's a great place to practice your math or to just read about some really cool stuff about science and social studies.
http://www.mathabc.com/
http://www.ixl.com/math/grade-6
http://www.eduplace.com/kids/mw/practice/ep_6.html
http://kids.nationalgeographic.com/
http://www.timeforkids.com/news-archive/science
http://www.mathabc.com/
http://www.ixl.com/math/grade-6
http://www.eduplace.com/kids/mw/practice/ep_6.html
http://kids.nationalgeographic.com/
http://www.timeforkids.com/news-archive/science