How are plants affected by climate and the seasons? In this large experiment students across the Northern Hemisphere track the growth of the same plant as the season changes from winter to spring. They discover how temperatures, sunlight, geographic location, and other variables influence plant growth — and the full array of seasonal changes that take place in the springtime. These observations set the stage for a better understanding of the impact of a changing climate. >>>

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Get Started Background information about the tulip study. >> Fall Spring		News Fall 2008 Updates >> Monthly Updates Begining September 11 Oct. 9, 2008: Here's the latest news: Explore the Tulip Bulb Study our New Maps Make an Experimental Garden
	(Map/Animations/Sightings) Gardeners are Digging In! Do you have your bulbs ready for this big experiment?
Enjoy! Booklets, pictures, and slideshows for students >>		Explore lessons and information for the classroom >>
Questions most frequently asked >>	Classrooms in Action:Teachers Share >> When Does Spring Arrive in Your Hometown? This booklet is a simple, student-directed, printable explanation of the Tulip Garden Study >>

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