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Countdown to Mystery Class: Fall 2012
Monthly: Sept.1, Oct.1, Nov.1, Dec. 1, Jan.1
The "Countdown" will help you get ready for the spring 2013 Mystery Class project.
moon January 2013
Does the moon have a daily cycle? Apply what you've learned about the causes of day and night on Earth as you sharpen your thinking skills for Mystery Class, which begins on January 28, 2013.
December 2012
During Mystery Class, students will receive sunrise and sunset times from mystery locations around the world. This month, set time zone clocks to explore local and Universal Time.
animation

November 2012
Days are getting shorter in the Northern Hemisphere as winter approaches. This month, begin to explore the question: What makes seasons?

Follow the Sun

October 2012
Autumn officially began in the Northern Hemisphere last week, and days are getting shorter. This month, explore what causes day and night?

Sunlight and the Seasons: Map of Day Length around the Globe

September 2012
As you "countdown" the months before Mystery Class begins in January, track changes in daylight as the Earth revolves around the Sun. Report to the live photoperiod map each month--and on the equinox and solstice. Share and compare observations with people around the globe!

Mystery Class Updates: Spring 2013
Weekly: Jan. 25, Feb. 1, 8, 15, 22, Mar. 1, 8, 15, 22, 29, Apr. 5, 12, 19, 26, May 3, 10, 2013
Earth from space Welcome and Orientation
Once Mystery Class begins on January 28, weekly news will be posted on this page every Friday from February to May. (See schedule above.) We'll challenge you to find ten Mystery Class sites using sunrise and sunset times and other "clues" as your guide!. Learn more about this global game of hide-and-seek.
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