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  Week #9
  It's time for the second set of Continent, Country, and City clues. Week by week, these clues reveal fun facts that will help progressively narrow your search. More. . .
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Mystery Class Photoperiod Map
 
Reasons for Seasons: Model

View from SpaceKotivalo/CC BY-SA 4.0

 

Mystery Class is a global game of hide-and-seek. Follow photoperiod clues to search for ten secret sites around the world. Track sunlight to solve a mystery—and discover the reasons for seasons along the way.

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