iKnowthat.com has online multimedia educational games for kids in grades PreK through 6 (ages 2-12).

PushPin Maps Geography Activity

This geography activity lets kids mark places on detailed maps of the United States, North America, South America, Europe, Asia, Africa and the world.  Along with marking places with different kinds of virtual pushpins, kids can label and add notes related to each pushpin. A ruler tool lets kid measure distances on the maps too. PushPin Maps can be used to reinforce concepts related to Social Studies standards and benchmarks for 1st grade, 2nd grade, 3rd grade, 4th grade, 5th grade, and 6th grade.

Capitals and large cities are marked on the maps. Maps can be saved at the site and shown to family and friends.