May 9, 2014
Introducing the Mystery Classes of 2014! Meet your new friends from around the globe and celebrate all that you learned during your search!
Today's the big day! Discover where the 10 sites have been hiding. Next week you'll meet the people at each site.
April 25, 2014
Today is the final day to submit your answers. On May 2nd, the secret sites will be revealed. On May 9th, the Mystery Classes will be introduce themselves with letters, pictures, and videos.
April 18, 2014
Just one week left to submit your answers! What did you discover about sunlight and seasonal change as you searched for the ten secret sites?
WikiMedia Commons
April 11, 2014
The final clues are here! It's time to find the secret locations and submit your answers.
WikiMedia Commons
April 4, 2014
The third set of Continent, Country, and City clues is here to help narrow your search. Final clues are next week.
WikiMedia Commons
March 28, 2014
The second set of Continent, Country, and City clues is here. Build upon last week's clues and narrow your search even further.
March 21, 2014
It's time for the first set of Continent, Country, and City clues! Week by week, these clues reveal fun facts that will help you progressively narrow your search.
WikiMedia Commons
Time Clues are here! Only on the equinox, locations at the same longitude experience sunrise at the same time. Use the clues to estimate longitude of the Mystery sites.
The Vernal Equinox is coming! Only on the equinox, locations at the same longitude experience sunrise at the same time. Next week's Time Clues will help you estimate the longitude of the Mystery sites.
February 28, 2014
Who am I? It's time to zero in on the line that divides the globe into Eastern and Western Hemispheres.
National Maritime Museum
February 21, 2014
Time to wake up? Clocks around the world are set at different times. This week, explore time zones to get ready for special clues coming in March.
CreativeCommons|G.Gallice
February 14, 2014
With three weeks of data, can you tell which Mystery Class sites are north and south of your hometown?
CreativeCommons|W.Baxter
February 7, 2014
It's the second week of sunrise/sunset data. What will the photoperiod clues reveal about the locations of mystery sites?
Wikipedia | C.T. Johansson
Welcome to the Mystery Class Seasons Challenge! Tracking weekly changes in sunlight, can you solve the mystery and find the ten secret locations?
Get ready to track seasonal changes in sunlight to find this year's Mystery Classes.
Where in the world did the new year arrive first? As you ring in 2014, get ready to find ten new secret sites hidden around the globe! Mystery Class begins on Friday, January 31st!
During Mystery Class, students will receive time clues from secret locations around the world. This month, explore local and Universal Time.
Days are getting shorter in the Northern Hemisphere as winter approaches. This month, begin to explore the question: What makes seasons?
Explore what causes day and night. Photoperiod is a central clue in Mystery Class, so build skills by reporting your photoperiod each month.
As you countdown the months before Mystery Class begins in January, track changes in day length as the Earth revolves around the Sun.
Monthly: September 1, 2013 - January 1, 2014
As you countdown the months before Mystery Class begins in January, track changes in day length as the Earth revolves around the Sun.
Explore previous Mystery Class Challenges.
Countdown to Mystery Class
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