http://www.kidsgeo.com/
http://kids.earth.nasa.gov/
http://apod.nasa.gov/apod/astropix.html
http://www.sciencekids.co.nz/
http://kids.nationalgeographic.com/kids/
http://www.studyisland.com/
http://kidsdomain.com/games/read2.html
http://www.math-exercises-for-kids.com/
http://www.funbrain.com/
http://www.coolmath4kids.com/
http://www.learninggamesforkids.com/geography_games.html/
http://www.kidspast.com/