Mystery Class Exploring Sunlight and the Seasons Getting Started The Mystery Class investigation is an eleven week hunt in which students try to find ten secret "Mystery Classes" hiding around the globe. The changing amount of sunlight at each site is the central clue. Students take an inspiring journey from knowing only sunrise and sunset times to discovering exact locations of the ten Mystery Classes. This investigation demonstrates that, as spring sweeps across the Northern Hemisphere, day length changes everywhere on earth. Students see that these dramatic seasonal changes in sunlight affect the entire web of life. Press Release: Uncover Global Mystery Sites >> How to Participate: Step by step instructions >> Mystery Class begins on February 2 and ends on May 15, 2009 Join the fun! Calendar >> Video Overview Exploring sunlight and the seasons >> How to Participate Step by step instructions >> News from February to May, 2009 >> Journal for your week by week investigation >> Build skills and understanding >> Advice from teachers >> This Season Teachers Kids Orientation Registration Search Copyright 1997-2009 Journey North. All Rights Reserved. Questions or comments? Contact us.