www.PebbleGo.com

http://www.worldbookonline.com/wb/products?ed=all&gr=Welcome+Yarmouth+Elementary+School%21


http://library.eb.com/levels/children
http://photosforclass.com/
http://www.dkfindout.com/us/  
With a teacher:
http://www.kidrex.org
 
 
http://animals.sandiegozoo.org/