Here are some links to help you learn more about Vietnam.

REMEMBER THE MPPS CYBER-SAFETY RULES AT ALL TIMES!
Factfile

Country Report (Don't waste your time clicking 'Learn More' because you have to pay to see anything else)

Find a map that you can print out at National Geographic.

Have a play with the interactive map at National Geographic.

Photo tour of the Mekong River (largest in Vietnam
Virtual sightseeing tour
History

Geography

People and society

Schools in Vietnam

Ho Chi Minh City

Try Geographia: click the link to the country you are studying - it's not very kid-friendly but it might have some good pictures to look at.