Mystery Class
 
 
Countdown to Mystery Class 2018: Four Months to Go
 

Autumn is here and days are getting shorter. In October, explore what causes day and night.

  • Mystery Class starts January 26, 2018
 Image of the Month

Follow the Sun
Day and Night
Explore: What Makes Day and Night?

Observe, Wonder, and Predict
Observe images of the Earth from space. See how sunlight strikes the Earth over the course of a day. Explore the 24-hour cycle of changes.


 What Makes Day and Night?
Continue to Track Changes in Day Length

Photoperiod is a central clue in Mystery Class. Build skills by reporting your photoperiod each month.

Report
Photoperiod for
October 20

Report to the Map!

1. Report for October 20

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:
 

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