Get information by using your knowledge of English.

Here is an amazing site about 500 best music albums of all time. Browsing will certainly be fun.

Russian history in English. 

Brief history of Russia.

Cells models.

Biology quizzes.

Biology animations.

National Geographic for children.

Space Exploration for students (NASA site)

NASA kids' club (NASA site)

Planets (NASA site)

Astronomy for children. 

Khan Academy - everything from Trigonometry to Art STRONGLY RECOMMENDED!

ENJOY!