Mystery Class Update: February 28, 2003
Four from Four for You
Have you figured out which location is the farthest north? The farthest south? The closest to the equator? Can you put them in a north/south order now? Where is your hometown in that order? Leading Up to the Longitude CluesIn two weeks, you'll start to receive a little help with your global search. On March 14, we'll provide the first set of LONGITUDE clues, which will give you everything you need to estimate the approximate longitude of the Mystery sites. Teacher Tips: Getting Ready for Longitude Clues Two Mystery Class veterans suggest that some advance preparation for the Longitude Clues is time well spent. Teacher Tip #1: Washington, D.C. teacher Kathleen Isaacs recommends two books to get students orientated to longitude before the clues arrive:
Earth from Space! Visualizing Sunrise and Sunset Have you ever wondered how a sunrise and sunset occur each day? Before we post the Longitude Clues, it is helpful to visualize how this happens. Sunrise and sunset happen because the Earth's rotation brings an area of Earth into the light of the sun in the morning and then out of it in the evening each day. To help you visualize this, take a look at Earth from space:
Try This! Eggstraordinary Equinox Experiment
Some people believe that there is another kind of "balance" on the Equinoxes, a special kind of force that will make a raw egg balance on its own end! Do you think this is true? Is there some sort of cosmic "balance" that makes eggs stand on their own on the Equinoxes, but not on other days? Is there a scientific way for you to test this? Try this "Eggstraordinary" experiment before, during and after the Equinox! This Week's Sunrise/Sunset Times Remember, the secret Mystery sites recorded their times last Monday, the same day you collected your own local sunrise/sunset data. Journey North Mystery Class Sunrise/Sunset Data Data For: Monday, February 24, 2003
(Note: Military time is usually expressed without any punctuation. We have used a ":" between the hours and minutes for clarity.) Note to Teachers: Plan Ahead and Mark Your Calendars Here's the 2003 Mystery Class Schedule so you know what to expect from Journey North. Please be sure to plan ahead.
The Next Mystery Class Update Will Be Posted on March 7, 2003
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