Mystery Class Update: March 7, 2014
Please Report
Your Daylength!
Report Your Sightings
The Vernal Equinox is coming! Only on the equinox, locations at the same longitude experience sunrise at the same time. Next week's Time Clues will help you estimate the longitude of the Mystery sites.
Image of the Week
Sunrise on the Equinox
Sunrise on the Equinox
Clues: Week #6
Local Photoperiod Data

Mystery Classes Photoperiod Data


Report Photoperiod
Photoperiod Map
Time Clues: Coming March 14th
Student Activity
Try this activity to help students make connections between time and longitude.

Teacher Planning Packet
Includes background information that will help you understand the science and math behind time clues.

Time and Longitude
Journal: Predicting Photoperiod
Draw your photoperiod graph the way you predict it will look at the end of March.

Journal #6

Next Update March 14, 2014