THE EXTRAORDINARY COLOR OF LEAVES

A WebQuest Lesson for Fourth Grade (Science)
Designed by
Charlene Patrick Bradley
e-mail: cbradley@cuip.uchicago.edu

  Introduction | Task | Process | Evaluation | Conclusion | Credits |Teacher

Introduction

Have you ever wondered why leaves change their colors during the fall?  We have all seen the wonders of nature during the autumn season.  The trees of the elm, oak, maple and gingko have leaves that turn yellow, red, brown and orange.  We will search the internet to discover the reason why leaves change their colors in the fall.

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The Clipart Image: Free school related clipart WEB images provided by High Plains Phi Delta Kappa ... album gallery clip art GIF picture graphic download school education scrapbook  GIF files animationTask

Your task is to find out the scientific reasons why leaves change their colors in the fall. Learning how to work the internet will obtain a great amount of information & help you understand this process.  You will be able to identify leaves from the elm, oak, maple and gingko trees that are in your community.  The final product involves your proficiency in using the World Wide Web to explain the driving quest of why leaves change colors in the fall.

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The Process

1.How does autumn color happen?
2.Where do autumn colors come from?
3.How does the weather affect autumn colors?
4. What triggers leaves to fall?
5. What does all this do to the tree?
6.Where can I see autumn colors in the United States?
7. What do autumn leaves and ripeningbananas have in common?

Research Note Taking Guide
Directions:

 Vocabulary: chlorophyll, glucose, water, green, leaf, orange, sunlight, autumn,deciduous,photosynthesis, xanthophyll and carotene.

How Complete is My Research?
Directions:Clipart Image: Free school related clipart WEB images provided by High Plains Phi Delta Kappa ... album gallery clip art GIF picture graphic download school education scrapbook  GIF files animation

      Student Activity Sheet
 
I visited_______web sites. I wrote information to answer ____questions on Why leaves change their colors in the fall? 
Tell something about internet research.Complete one of the sentence starters : I found out ........My group discussed........... Describe one internet site that you liked best.

Project - Science Experiment - when you get to this page, scroll to Project #3.

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The Evaluation

Children will be assessed using the following two rubrics:

Rubric for the Children's Research Guide:
Capable - 3 points: 
Developing - 2 points
Beginning - 1 point
The student records accurate information for all the questions in the research guide. The student answers 5 - 6 questions on the research guide.  Most of the information is accurate.  The student answers 2 - 3 questions on the research guide.  Few statements are accurate.
The notes are legible and logical. The notes are fairly legible. There is little evidence of logical order.  The notes are not legible.
The student researched many websites 
(6 - 8)
The student researched some websites 
(3 - 4)
The student researched a few websites 
(1 - 2)

Rubric for Oral Presentations:
 
Capable - 3 points
Developing - 2 points
Beginning - 1 point
The oral presentation indicates a very good understanding of the subject. The oral presentation indicates a fairly good understanding of the subject, but may omit important facts or include an inaccurate comment. The oral presentation provides a few facts about the subject.  Some statements may be inaccurate.
The information is presented in a clear, straightforward way. The information can be understood, but the order may not always be logical or sequential. The information presented may be confusing.
The child looks at the audience and speaks clearly. The child makes some eye contact with the audience. The child rarely looks at the audience while speaking.

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The Conclusion

You will be able to give an oral presentation to tell
the scientific reasons why leaves change colors in the fall. You will summarize what you have learned as a result of this process. You might want to search other leaves on the internet and categorize them to determine which leaves turn yellow, red, orange and brown. You can further research our state leaf, the white oak, and describe what color it changes to during the fall, draw the shape of the leaf, determine if the tree is deciduous or not. You might want to collect more leaves and preserve them in a folder identifying and labeling each. Further research can tell you which leaves are medicinal and which leaves are used for teas.

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Credits: Many thanks to all who have provided web site information.
http://www.urbanext.uiuc.edu/fallcolor/trees.html
http://www.sciencemadesimple.com/leaves.html
http://virtual.clemson.edu/groups/FieldOps/Cgs/leaves
                Found under: /groups/FieldOps/Cgs/leaves.htm
http://www.accuweather.com/iwxpage/paws/fallfaq.htm#top
http://www.brainpop.com/science/ecology/autumnleaves
http://www.esf.edu/pubprog/brochure/leaves/leaves.htm
http://www.dictionary.com/
http://www.ask.com/index.asp

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