Alien Invasion: A Unit on Adaptation

by Sarah Grice and Meredith Rutter

Introduction
Anchor Video
Concept Map
Project Calendar
Lesson Plans
Letter to Parents
Assessments
Resources
Modifications
Grant

Resources

Supplies:

Office and Creative Supplies

Two In-Class Computers with Microsoft Office Software

Experimental Supplies:

  • Cactus plants
  • Yucca plants
  • Cushion plants
  • Lichens
  • Freeze Tolerant Insects
  • Sun Lamps
  • Thermometer

Print Resources:

  • Virus and the Whale, NSTA Curriculum Guide
  • Making Cladograms, ENSI/SENSI lesson plan (available on the web)
  • GIZMO Software- www.explorelearning.com (download for a fee or free 30 day trial)
  • Biology, by Campbell, or other biology text

Video resources:

  • Evolving Ideas: How Do We Know Evolution Happens?
    http://www.pbs.org/wgbh/evolution/library/11/2/e_s_3.html
    This short, on-line video (7 minutes long) describes two lines of evidence, fossil and molecular, which contribute to our understanding of evolution. It focuses on whales, which provide an excellent opportunity to examine the transition between species because so many intermediate fossils have been found. The work of Philip Gingerich, who is the lead scientist in Activity 7 of the Virus and Whale: Exploring Evolution in Creatures Small and Large is highlighted.
  • Evolving Ideas: How Does Evolution Really Work?
    http://www.pbs.org/wgbh/evolution/library/11/2/e_s_4.html
    This short, on-line video (<7 minutes long) takes students to Ecuador to examine the research of a modern-day Darwin, Chris Schneider. Chris is advancing our knowledge of evolution through his study of natural selection in hummingbird populations at various elevations.

Primary Literature on Finches:

  • Boag, P. T. and Grant, P. R.  1981.  Intense natural selection in a population of Darwin's finches (Geospizinae) in the Galápagos.  Science 214: 82-85. 
    This paper is the first report of selection for large beaks in Geospiza fortis (medium ground finch) during the drought on Daphne Major Island.  This study was undertaken July 1975-June 1978.  One of the main conclusions was that “occasional strong selection of heritable characters in a variable environment may be one of the keys to explaining the apparently rapid adaptive radiation of the Geospizinae in the Galápagos.” 
  • Grant, P. R. and Grant, B. R.  1995.  Predicting microevolutionary responses to directional selection on heritable variation.  Evolution 49:241-251. 
    This paper continues studies of size selection in Geospiza fortis (medium ground finch) on Daphne Major Island, with the addition of data from the drought of 1984-1986.  Data collected were weight, wind length, foot length as well as length, breadth, and width of the bill.  Beak size in the population was 4% larger after the 1977 drought.  What is interesting is that the population of 1987 experienced decreased means of all measurements except for bill length.  The authors discuss results and suggest that climatic change may “have indirect as well as direct effects upon the ecological and evolutionary fates of species.” 

Useful Web Resources:

-Extreme Environments

On Earth Extremes
http://www.resa.net/nasa/onearth_extreme.htm

Extreme Experience
http://www.whoi.edu/sbl/liteSite.do?litesiteid=13252&articleId=20426
This website gives links to a conversation between astronaut and deep sea researcher from their vessels

Thermobiology
http://tbi.montana.edu/outreach/index.html
Resources related to thermobiology and the environment at Yellowstone National Park


-Lesson Plans (Adaptation & Invasive Species)

Adaptation Lesson Plan
http://www.lessonplanspage.com/ScienceAnimalAdaptations58.htm

Invasive Species Lesson Plan
http://www.oar.noaa.gov/spotlite/archive/spot_illinois.html

-Fossil Record

History of Life
http://www-geology.ucdavis.edu/~cowen/HistoryofLife/biases.html
This website provides a nice overview of implications of the fossil record. A handy brief guide for those who want to understand the strengths and limitations of the record. 

Learning from the Fossil Record
http://www.ucmp.berkeley.edu/fosrec/
This site has a variety of activities and lesson plans that can be used to teach the fossil record.

-Evolution Information

Understanding Evolution for Teachers
http://evolution.berkeley.edu/evosite/evohome.html
Understanding Evolution for teachers is a sub-site within Understanding Evolution dedicated to helping teachers with the subject of evolution. The teacher site includes basic evolution information, classroom strategies, lists of concepts appropriate for different levels, lesson plans and more.

I highly recommend the activity entitled “What Did T. Rex Taste Like?” to help your students understand concepts such as phylogeny, common ancestor, and relatedness. This activity can be found at: http://www.ucmp.berkeley.edu/education/explorations/tours/Trex/index.html

Evolution – The PBS Series    http://www.pbs.org/wgbh/evolution/

Evolution, which premiered on PBS September 24 - 27, 2001, travels around the world to examine evolutionary science and the profound effect it has had on society and culture. From the genius and torment of Charles Darwin to the vast changes that spawned the tree of life, from the role of mass extinctions in the survival of species to the power of sex to drive evolutionary change, Evolution is fascinating and far-reaching in scope. The series also explores the emergence of consciousness, the success of humans, and the perceived conflict between science and religion in understanding human life.

Teaching About Evolution and the Nature of Science http://www.nap.edu/books/0309063647/html/index.html

Teaching About Evolution and the Nature of Science was published and supported by the National Academy of Sciences and builds on the 1996 National Science Education Standards released by the National Research Council--and offers detailed guidance on how to evaluate and choose instructional materials that support the standards. Comprehensive and practical, this book brings one of today's educational challenges into focus in a balanced and reasoned discussion. It will be of special interest to teachers of science, school administrators, and interested members of the community.