Below are some websites with links to activities for scientific outreach at the elementary and middle school levels.
Science is Fun, Shakashiri lab
Adult Role Models in Science list, UW-Madison Institute for Biology Education
Science Buddies – lots of activities in different disciplines
UW-Madison Biology Outreach club, list of activities (contact BOC for details at firstname.lastname@example.org
NOVA ‘Making Stuff’ Materials Science Activities
UW-Madison Materials Research Science and Engineering (MRSEC) website.
* MRSEC also has training videos for many of their outreach activities.
And a great compilation of home science experiments recommended by our friend Jane (links at the bottom of the page). Thank you Jane!
Another set of fun experiments suggested by our friend Dakota, thanks Dakota!