Countdown to Mystery Class: Five Months to Go!

Welcome to Mystery Class 2013-2014
As you countdown the months before Mystery Class begins in January, track changes in day length as the Earth revolves around the Sun.

Image of the Month

Follow the Sun
The Equinox is Coming!
Image: A Clevenger

How Can I Prepare Students? Track Changes in Day Length

Day length changes with the seasons and is a central clue in Mystery Class. Help students explore the relationship between sunlight and seasonal change.

Report Twice
this month:
September 1 and 22

Report to the Map!

1. Report for dates listed below.

2. Find your sunrise/sunset: Look-up

3. Calculate your day length (photoperiod).

4. Report your day length: Select "Daylight"

Mystery Class Photoperiod Map Photoperiod Map: Dates to Report Photoperiod Map: Guiding Questions
Map Dates
to Report
Guiding Questions
for Map Analysis
Just for Teachers: How to Participate
Mystery Class Participation Guide Mystery Class is a global game of hide-and-seek. Students track seasonal changes in sunlight and then investigate other clues to find ten secret sites around the world. Download step-by-step instructions:
Next Update October 1, 2013