Educational sw and toys

A asked about Educational sw for Ap - so I googled for Educational software 8-10 years and came up with http://www.thekidstoystore.com/sciencekits8.html There's also Google Earth and Geekdad.
Searching Ask Slashdot gave pointers to edubuntu and Tuxpaint - that was for pre-schoolers.(Edit: Edubuntu is hardly for kids!)
And wikipedia has a good listing. 'Where in the World is Carmen Sandiego' can be downloaded from here. And there seem to be quite a few more educational game downloads there too!