Where do you get the marvelous materials that teachers use in science lessons-the graduated cylinders, rock collections, and wire strippers, not to mention the ant farms and caterpillars? Here is a list of useful suppliers.
Carolina Biological Supply Company
http://www.carolina.com/
NASCO
http://www.enasco.com/prod/Home
The Science Fair
http://www.thesciencefair.com/
Ward's Natural Science
http://www.wardsci.com/