UNIT 4. Our planet

This is the video we watched in our class about the "Big Bang Theory". (It is in Spanish)

https://www.youtube.com/watch?v=a9L9-ddwcrE

In this video you can review and understand "the Earth's movements". 

https://www.youtube.com/watch?v=cDed5eXmngE

This last video is about the "Phases of the Moon". We watched it in our class. 

https://www.youtube.com/watch?v=76-HAqNKqKA

In this web page you can find some games and quizzes if you want to review the unit. 

http://www.softschools.com/science/space/