Find out and include:
Why were castles built?
Where were castles built?
How and why were they defended?
You are free to include any other interesting information that you find out.
Here are some websites that may help you:
http://www.castles.org/Kids_Section/Castle_Story/
http://www.theschoolrun.com/homework-help/castles
http://www.primaryhomeworkhelp.co.uk/Castles.html
Would you like to have lived in a castle?
Why?