Photo credit: roomrecess.com
Geo Tombs is a very fun game for practicing how to find the area and perimeter of various geometric shapes. Collect keys, and open treasure chests with the correct answer to the question asked at the top of the screen. Dynamite is thrown to clear out debris that blocks passages.
Disclaimers: The treasure hunter throws dynamite at giant beetles and mummies. Lastly, this game requires Flash.