http://www.enchantedlearning.com/ always produces children's educational websites  which are designed to capture the imagination while maximizing creativity ,learning and enjoyment .There are around 30000 pages which are full of curriculam materials.T his website is availalable in japaneese ,porugeese,spanish and sweden.they themselves assert that various topics related to biology ,physical science ,languages, k-2 geography and historyappear in it.all this ideas are presented in an amazing manner