What can I observe? What can I change? What can I measure?
Teen Science Fair Sourcebook by 
Blue Ribbon Science Fair ProjectsThe library has several science fair idea books. Click on the cover to view the table of contents.
These websites are great places to go if you need help trying to decide what kind of Science project to do.
This series covers projects in many different areas. The table of contents for each book will give you many ideas. Click on the book cover for more information.
Ace Your Sports Science Project
Ace Your Space Science Project
Ace Your Physical Science Project
Ace Your Math and Measuring Science Project
Ace Your Forces and Motion Science Project
Ace Your Science Project Using Chemistry Magic and Toys
Ace Your Chemistry Science Project
Ace Your Weather Science Project
Ace Your Ecology and Environmental Science Project
Ace Your Plant Science Project
Ace Your Animal Science Project
Ace Your Human Biology Science Project
Ace Your Exercise and Nutrition Science Project
Ace Your Science Project about the Senses
Ace Your Food Science Project