Originally published: Auckland, N.Z. : Global Education Systems, Ã2009.
Key links gold.
Includes guide notes for teachers.
Includes index.
"Informational explanation"--Page 4 of cover.
Content Note
Why people build bridges -- How the Romans built bridges -- Why Venice has so many bridges -- Why a bridge's design is important -- Why bridges have different designs -- Why some bridges move -- Why bridge work can be dangerous.