1. Monday, January 30th

• Look up your LOCAL sunrise/sunset times for January 30th.
• Calculate and plot your LOCAL photoperiod on this data sheet and graph.
• Report your LOCAL photoperiod for 01/30/12
  to the Mystery Class photoperiod map (optional).

2. Friday, February 3rd

• Discover Monday's sunrise/sunset clues from all 10 Mystery Classes in the first Mystery Class news update.
• Calculate and plot the January 30th photoperiod from all 10 Mystery Classes on this data sheet and graph.

On Mondays you collect your own LOCAL sunrise/sunset data.

On Fridays you receive sunrise/sunset from the 10 Mystery Class sites.

• See How to Participate for Mystery Class instructions and resources.

• Don't hesitate to contacts us if you have questions. We're here to help!

Teachers and students everywhere are invited to join in Mystery Class, Journey North's global game of hide-and-seek! Journey North is a free online science project and all are welcome to participate. Share this message with educators in your school, community, and around the globe!

About Mystery Class
Mystery Class is a global game of hide-and-seek. Students follow photoperiod clues to search for 10 secret sites around the world. While tracking seasonal changes in sunlight to solve a mystery, students discover the reasons for seasons.

On Mondays you collect your own LOCAL sunrise/sunset data. On Fridays you receive sunrise/sunset data from the 10 Mystery Class sites. It's not too late. . . See calendar.