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Countdown to Mystery Class: Get ready for Mystery Class by tracking changes in day length as the Earth revolves around the Sun. More...
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Mystery Class Photoperiod Map
 
Reasons for Seasons: Model

Track the Seasons to Solve a Mystery

 

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.

 

Mystery Class Begins January 29, 2016

 

Track the Seasons to Solve a Mystery Countdown to Mystery Class: Fall 2015

Monthly: September 1, 2015 - January 1, 2016
As you countdown the months before Mystery Class begins in January, track changes in day length as the Earth revolves around the Sun.


 
Sunset September 2015
Getting Ready for Mystery Class: Track changes in daylength as the Earth revolves around the Sun.
 
Track the Seasons to Solve a Mystery

October 2015
Autumn is here and days are getting shorter. This month, explore what causes day and night.

 

 
Track the Seasons to Solve a Mystery

November 2015
Days are getting shorter in the Northern Hemisphere as winter approaches. Begin to explore the question: What makes seasons?

 

 

December 2015
During Mystery Class, students receive time clues from secret locations around the world. This month, explore local and Universal Time.

 

Archived Seasons
Sun

Explore previous seasons:

 

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