All Ages Education
… which is not to say “children only.”
http://www.inventored.org/k-12/
Fun multi-topical site which endeared itself to me by linking to http://antimonopoly.com/
Great site with diverse and deep material. Don’t let the name fool you, it’s a good place to brush up. Also see “parent” site kapili.com.
http://www.virtualfreesites.com/museums.html
Showing its age and nearly a museum in and of itself, this voluminous array of virtual tours still has many active links, including the Smithsonian and Holocaust museums.
http://www.duckbrand.com/Duck%20Tape%20Club/ducktivities.aspx
http://www.craftster.org/forum/index.php?action=tags;sa=showtopics;tag=duct_tape_crafts
You can apparently make your entire wardrobe and half your house out of duct tape.
http://www.learninggamesforkids.com/
Does just what it says on the can, and then some. Not bad.