Experiment that helps students with the Metric System

[Unregistered]

I've been rattling my brain to think of an original experiment that can get my students interested in the Metric system but have drawn a blank. Any ideas?

[Teachnology]

This lab can be adapted to fit just what you need:

http://www.teach-nology.com/worksheets/science/gen/lab1/

[Unregistered]

Thanks for the help, but it says that page is no longer available. And I forgot to add this in my first post: the students are 8th graders.