Mystery Class
January 28 - April 15, 2019
Weekly Updates posted
Mondays
January 28, 2019
Welcome to Mystery Class 2019! The search begins. . .
February 4, 2019
It's the second week of photoperiod clues. What do they reveal about the locations of mystery sites?
February 11, 2019
With three weeks of data, can you tell which Mystery Class sites are north and south of your hometown?
February 18, 2019
This week, explore time zones to get ready for special time clues coming in March.
February 25, 2019
It's time to zero in on the line that divides the globe into Eastern and Western Hemispheres.
Week 6
March 4, 2019
Week 7
March 11, 2019
Week 8
March 18, 2019
Week 9
March 25, 2019
Week 10
April 1, 2019
Week 11
April 8, 2019
April 15, 2019
Today's the big day! Discover where the 10 mystery sites have been hiding.
Archived Seasons: Spring 2019, Fall 2018, Spring 2018
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