- Keep Circulating the Tapes: Math For the Real World is not exactly the most common game in the world, especially when it comes to Davidson/Knowledge Adventure games. There are also three other games in the series, Grammar For the Real World, Spanish For the Real World, and French For the Real World, which are even less well-known (and probably less common) than Math.
http://tvtropes.org/pmwiki/pmwiki.php/Trivia/MathForTheRealWorld
FollowingTrivia / Math for the Real World
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