You are browsing the archive for natural selection.

How Evolution Gave Us The Human Edge

January 22, 2011 in Teaching Resources, Technology

Click on the image above to access this unique NPR Resources containing

  • 4 Interactives on Brewing a Human, An Upright Primer, Lost Cousins and Fossil Forensics (the last two are a small portion of the Smithsonian Human Origins Initiative)
  • A collection of 20 NPR audio stories previously broadcast on Morning Edition or All Things Considered that provide an eclectic and pretty comprehensive prespective on human evolution.  Topics include, skin color, walking and running, tools and weapons, diet, brain development, talking and language, culuture and belief systems.

I have not used this resource in class having just noticed it while preparing my previous post on the NPR Science site.  If you have used it before and have particular suggestions on its integration please share your experiences with a comment.

Energizing Evolution

January 1, 2010 in Teaching Resources

it, as well as our understanding of it, just keeps going and growing and going…

During the holiday break, I have come across a number of valuable resources (video, audio, and paper) for demonstrating to students that the processes of natural selection and speciation, that Darwin made us aware of 150 years ago this past year, are actually occuring before our very eyes.  

Instead of hypothetical just-so-stories, these resources are user friendly and thought provoking real world examples with organisms and adaptations that students can relate to.  These examples also highlight the work of the people, and the personalities, behind the acquisition of new scientific knowledge.  I commend these scientists and numerous others who understand the importance of communicating science to a sometimes skeptical public and whose efforts have provided us with these wonderful resources and springboards for learning.

 Lizards

Read on to find out about these 7 resources…

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Avida-Ed: Exploring Evolution in Silico

October 8, 2009 in Labs, Student Research Ideas, Teaching Resources, Technology

At the NABT Conference in Atlanta in the fall of 2007, Brad Williamson talked me and a few others who were loitering around to come to a workshop presentation on Avida-Ed software as a means of fostering inquiry of evolutionary processes.  After the presentation, Brad suggested that I write a post about the experience.  At the time, I didn’t have much to say.

Having had time to play around with Avid-Ed and to make my way through most of the unedited model lessons downloadable from the Avida-Ed website, I have decided to make the post.  The best place to start is to download the software developed by Robert T. Pennock from the Avida-Ed website at Michigan State University, and to read the Discover magazine article written by Carl Zimmer highlighting Robert Pennock’s development and use of the research version of the software to study the process of evolution (The first activity below has pre-activity questions that require students to read this article).  The links below will get you that far.

  1. Avida-Ed Website
  2. Testing Darwin by Carl Zimmer in February 2005 edition of Discover magazine.

If you are a self learner, after downloading the Avida-Ed, open it, drag the @ancestor into the black area of the Petri Dish window to the right, select the play button, and have fun.  Otherwise, keep reading…

Well, as I said, I have had the time to make my way through the unedited model lessons posted on the Avida-Ed website.  In effort to prepare to introduce my freshman honors biology and AP Biology student for the software, I have cut and pasted, edited, and created (in some cases) more detailed step-by-step instructions for the activities presented in their models lesson.  In a few cases, I have even collected and attached data in a teachers section at the end of the student friendly documents that help you understand what the students will be doing prior to your own exploration of the software.

Explorations in Evolution Series

  1. I – Introduction to Avida-Ed
  2. II – Observing an Instance of Evolution in Avida-Ed
  3. III – How do Resource Availability & Mutation Rate influence Avidian Fitness?
  4. IV – Observing Mutations in the Genomes of Evolving Avidians
  5. V – Common Misconceptions of Evolution

I look forward to your comments and criticism of the activities but realize that I am just beginning to use these activities in my class for a second time.

As a justification for activities such as these, if you take the time to read the Bio2010 published by the National Academies as well as the most recent bulletin from HHMI (read Thinking like an Engineer and Add 56), you will quickly learn that we should be doing more to motivate our keen biology students to appreciate the importance of other scientific perspectives (mathematics, computer science, physic and engineering).  Similarly, we should be reaching out equally to those that are already bent toward study in these other fields and show them that they can fulfill there interests while helping to make new discoveries in the biological sciences.

Download the non-education version of Avida.

Enjoy!

Nature’s Evolutionary Gems

January 3, 2009 in KABT News, Nature, Teaching Resources

A pdf Resource for Teachers wishing to spread Awareness of Evolution by Natural Selection

darwinnatureimage1
www.nature.com/evolutiongems

In this celebratory year of the Birth of Charles Darwin and the publication of his On the Origin of Species, it is fitting that the January 1 issue of the journal Nature announces a document “for teachers and others wishing to spread awareness of evolution by natural selection.”  The document is accessible at the link above, which forwards one to a seventeen page pdf file

The document includes student-friendly ”editorial introductions” to 15 papers that have been published in Nature during the past decade.  These papers were selected “to illustrate the breadth, depth and power of evolutionary thinking”, and cover natural selection from the perspectives of the Fossil Record, Habitats, and Molecular Processes.  The specific titles are given by clicking the more link at the end of this post. 

Each abstract is formatted to a single page, and is followed by a link to the orginal paper, links to additional resources (which may not be accessible), and a link to the website(s) of the author(s).  For those that don’t have a subscription to the journal, many of the links to abstracts of the original research papers provide access to the full text and a freely downloadable pdf .  Happy readings!

Nature, thanks for compiling this fitting and freely available educational resource!  It is a wonderful New Years Gift!

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