Other
Science Fairs: Ideas for Elementary Projects: Grades 4 6
This Science Fairs website is a resource for a wide variety of science fair starter ideas. Use an idea from here and build your own project.
Other
Canadian Mathematical Society: Math Projects for Science Fairs
Online resource if you want to do a math project for your science fair. French available by going to the Homepage.
Other
Science Fairs: Ideas for Primary Projects: Grades 1 4
This resource from Science Fairs is a wonderful resource for a wide variety of science fair starter ideas. Use an idea from here and build your own project.