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KHEC Curriculum Framework 4.0


The National Center for Science Education (NCSE). The NCSE defends the teaching of evolution in public schools. They are a nationally-recognized clearinghouse for information and advice to keep evolution in the science classroom and "scientific creationism" out. NCSE, the only national organization to specialize in this issue, is devoted to defending the teaching of evolution primarily against attacks by religiously motivated anti-evolution. They provide reviews of current anti-evolution activity in the U.S. and around the world; background to the fundamentally creationist and anti-evolution movement known as "Intelligent Design"; detailed information on the creation/evolution controversy from 1859 to the present; and resources for parents, teachers, school boards, and the public. Among their many resources are: 10 Significant Court Decisions Regarding Evolution/Creationism; Brief History of Creationism -- From the Middle Ages to "Creation Science"; Creationism/Evolution 101 -- Reading List; Facing Challenges to Evolution Education; The Creation/Evolution Continuum; What’s Wrong with "Theory not Fact" Resolutions; and Why Teach Evolution? The NCSE suggests that you contact them if you need advice, information, or help in defending the teaching of evolution. Their web site is: www.natcenscied.org/

Evolution: Education and Outreach. The first issue of this new journal is available on-line. There you will find scientific articles; lesson plans; reflections on evolution; curricula focusing on evolution; and book reviews. According to the press release, Evolution: Education and Outreach promotes understanding and teaching of evolutionary theory for a wide audience. Targeting students of all ages including undergraduates, teachers and scientists alike, the journal publishes articles to aid members of these communities in the teaching of evolutionary theory. The journal connects teachers with scientists by adapting cutting-edge, peer-reviewed articles for classroom use on a variety of instructional levels. Teachers and scientists collaborate on multi-authored papers and offer tools for teachers such as unit and lesson plans and classroom activities as well as online content such as podcasts and PowerPoint presentations. The journal will be freely available on-line through 2008. For more information, visit here.

Growing Up in the Universe: 2-Disc DVD Set. The Richard Dawkins Foundation for Reason and Science. Growing Up in the Universe is a series of lectures by Richard Dawkins as part of the Royal Institution Christmas Lectures where he discussed the evolution of life in the universe. The lectures were first broadcast in 1991 in the form of five one-hour episodes. Dawkins presents lectures on life, the universe, and our place in it. The titles of the five part series are: Waking Up in the Universe, Designed and Designoid Objects, Climbing Mount Improbable, The Ultraviolet Garden, and The Genesis of Purpose (they can be viewed online for free at the website of the Richard Dawkins Foundation). With his usual clarity, Dawkins presents information and insights that will capture the minds of young and old alike. Illuminating demonstrations, wildlife, virtual reality, and special guests all combine to make this collection a highly useful resources for all ages.

A No-Holds-Barred Evolution Curriculum for Elementary and Junior High School Students **Evolution: Education and Outreach** Volume 1, Number 1 - January, 2008 Published online: 21 November 2007
Author:  Joseph Fail Jr., Department of Natural Sciences, Johnson C. Smith University, Charlotte, NC.
Abstract: Understanding the basic mechanism of evolution by natural selection together with examples of how it works in nature is crucial for explaining and teaching the workings of biology and ecology to young students. Dobzhansky said it best in his advice to educators of biology: “Nothing in biology makes sense except in the light of evolution.” This premise is true at all levels of biology but especially so in the elementary years where foundations of science knowledge are laid. Elementary students are capable of learning cohesive and connected stories of biological principles and learning them within a no-holds-barred arena wherein concepts and processes usually reserved for high school years are taught with special care, appropriate exercises, and patient explanations. This story must include solid introductions to the fundamental principles of evolution by natural selection that are threaded within and alongside those of basic biology and ecology. This paper attempts to make the case for the inclusion of connected stories of biology in the earliest years of education and to include within that education the unifying theme of all biology and ecology studies—evolution.
References: 22 invaluable references are provided, including these two PBS videos, both from www.pbs.org: PBS Video. Evolution; 2001. and Journey of Man; 2003.

Note: The article also appeared in The American Biology Teacher. 65 (5). pp. 341–346.

***Note: An article by the same author, with a similar title, appeared in The American Biology Teacher. 65 (5). pp. 341–346."  However, that one is titled "A No-Holds-Barred Ecology Curriculum for Elementary & Junior High Students" and describes the ecological focus on life science for the elementary level.  There is no mention of evolution there, but his article in Evolution: Education and Outreach cited above makes clear the author's view that both evolution and ecology are integral to life science/biology at any level. Source: www.springerlink.com/index/J613316288310881.pdf

** Evolution: Education and Outreach: Volume 1 -- #1 -- January 2008; #2 – April 2008 --
The journal promotes accurate understanding and comprehensive teaching of evolutionary theory for a wide audience. Targeting K-16 students, teachers and scientists alike, the journal presents articles on the teaching of evolutionary theory. It addresses the question of why we should care about evolution by exploring the practical applications of evolutionary principles in daily life and the impact of evolutionary theory on culture and society throughout history. The journal connects teachers with scientists by adapting cutting-edge, peer reviewed articles for classroom use on varied instructional levels. Teachers and scientists collaborate on multi-authored papers and offer unit, lesson plans and classroom activities as well as online content such as podcasts and power point presentations. Free Online Journal Access: www.springer.com/life+sci/journal/12052?detailsPage=description

The second issue, now available on-line, includes articles on evolutionary medicine, evolutionary trees, and punctuated equilibrium; curriculum articles on such topics as using "Inherit the Wind" in the science classroom, molecular evolution and HIV, and hominid evolution; and reviews of a number of books. Also included is the second installment of NCSE's regular column for Evolution: Education and Outreach: "Overcoming Obstacles to Evolution Education." In "The OOPSIE Compromise -- A Big Mistake.” NCSE's Eugenie C. Scott and Glenn Branch write, in part that:

Opt-out policies are typically invoked to excuse students from activities to which they or their parents may have religious objections, such as reciting the Pledge of Allegiance, dissecting animals in a laboratory, or attending sex education classes. Occasionally, however, a school or school district allows students to opt out of academic topics, including, sometimes, evolution. Opt-out policies specifically including evolution are a big mistake -- for the students who opt out, for their classmates whose studies are disrupted, and especially for their teachers, who cannot fulfill their duty to instruct their charges about biology without emphasizing evolution.
Visit here for more infromation



Understanding Evolution For Teachers. This site is divided into the following areas:
Learning Evolution

Teaching Evolution

  • Teaching Evolution: Focus on the basic concepts for teaching evolution and find lesson plans for the classroom.
  • Overcoming Roadblocks: Identify strategies to overcome potential roadblocks to the teaching of evolution.
  • Potential Pitfalls: Avoid common mistakes by reading this primer on pitfalls.
  • Understanding Evolution Home: A one stop source for information on evolution. This site has content geared for all readers, not just teachers.

In the link to Teaching Evolution you be directed to three additional sources:

Focus on the fundamentals: The mechanism of evolution is based in these four fundamentals: variation, inheritance, selection, and time. At the same time, always keep in mind the nature of science – how we know what we know. Think of what you would like your students to know: Concepts guide your planning to the ideas that are central to the understanding of evolution. Find the resources to support their learning: Once you have identified the concepts, select the appropriate lessons.

This is a somewhat complex – but surely a most comprehensive – site.  However, by following the various links, you will be led to a treasure trove of information and a huge assortment of lesson plans that you may wish to explore. There are lessons to be found for grade levels – K-2, 3-5, 6 -8, and 9 -12. For additional information, visit evolution.berkeley.edu/evosite/

Not in Our Classrooms: Why Intelligent Design is Wrong for Our Schools. Edited by Eugenie C. Scott and Glenn Branch. Forward by Rev. Barry W. Lynn. (2006). Boston: Beacon Press.
More than 80 years after the Scopes trial, creationism is alive and well. Through local school boards, sympathetic politicians, and well-funded organizations, a movement has developed to encourage the teaching of the latest incarnation of creationism -- intelligent design -- as a scientifically credible theory alongside evolution in science classes. Although intelligent design suffered a serious defeat in the recent Kitzmiller v. Dover trial, its proponents continue their assault on evolution education. In Not in Our Classrooms, parents, teachers, and other concerned citizens have a much-needed tool to use in the argument against teaching intelligent design as science.

Where did the concept of intelligent design originate? How does it connect with, and conflict with, various religious beliefs? Should we "teach the controversy" in our science classrooms? In a series of well-written essays, a team of experts answers these questions and many more, describing the history of the intelligent design movement and the lack of scientific support for its claims. Most importantly, the contributors -- authorities on the scientific, legal, educational, and theological problems of intelligent design -- speak specifically to teachers and parents about the need to defend the integrity of science education by keeping intelligent design out of science curriculums. A concluding chapter offers concrete advice for those seeking to defend the teaching of evolution in their own communities.   For additional information about this book, visit www.ncseweb.org/nioc/

Evolution vs. Creationism: An Introduction. Eugenie C. Scott. (2004). Westport, CN: Greenwood Publishing Group, Inc. [Also available in paperback, University of California Press, 2005]
The debate over the teaching of evolution continues to rage. There is no easy resolution for it is a complex topic with profound scientific, religious, educational, and legal implications. How can a student or parent come to grips with this issue? Evolution vs. Creationism provides a comprehensive and balanced introduction to the many facets of the current debate -- the scientific evidence for evolution, the legal and educational basis for its teaching, and the various religious points of view -- as well as a concise history of the evolution-creationism controversy. A section of primary source documents from all sides of the issue is included.

Each of the four sections of the book provides a resource that will assist the reader in better understanding these issues. The first section addresses the nature of how evolution works as part of the scientific enterprise as well as a summary of the relationship between religious beliefs and science. A section on the history of the controversy provides a  synopsis of the lengthy struggles, from before Darwin to the present day, between advocates of creationism and the proponents of evolution. A collection of primary source documents addressing cosmology, law, education, and religious issues from all sides of the debate constitute the third section. The book concludes with a selection of resources for further information for those who wish to study the topic in more depth.

Eugenie C. Scott, Executive Director of the National Center for Science Education, has written extensively on this issue and is past president of the American Association of Physical Anthropologists. For additional information, visit www.ncseweb.org/evc/

Becoming Human. This very interesting web site provides updated information on the scientific view of hominid evolution. It is an extremely insightful video with valuable comments and backup data. It is well-organized and includes some fascinating information. Also view the sections on the Learning Center and Resources. Check the web site: http://www.becominghuman.org/

Galapagos Education: Resources for Teaching Evolution. These resources were developed by the National Science Teachers Association (NSTA) for teachers and parents interested in educational activities about the Galápagos Islands. Developed in conjunction with the Smithsonian Institution and the Imax film Galapagos, this site supports teaching and learning about biology, ecology, geology, and the unifying concepts of science. One of those unifying concepts is evolution -- that series of changes, some gradual, some sporadic, that accounts for the present form and function of objects, organisms, and systems. The NSTA supports the position that evolution is a major unifying concept of science and should be included as part of K-College science curriculum.  Online resources that are valuable in teaching evolution include:

Ecology and Evolution: Islands of Change. Several of the activities featured in this site are adaptations from NSTA's full-length book, Ecology and Evolution: Islands of Change. Focusing on island biogeography, ecology, and evolution, the activities use the Galápagos as a theme throughout but also make connections to students' local environments. For more information, visit here.

Voices for Evolution. Developed by the National Center for Science Education and the American Association for the Advancement for Science, as part of the Dialogue on Science, Ethics, and Religion, Voices for Evolution, this resources provides links to the legal background behind the evolution controversy as well as information provided by scientific, educational, religious, and civil libertarian organizations. www.don-lindsay-archive.org/creation/voices/
For additional information, visit the National Science Teacher’s Association


Evolution and the Nature of Science Institutes (ENSI). A variety of valuable lessons are on the ENSI web site that are appropriate for high school age students. However, the developers indicate that many can be used by younger students with slight modification depending on teacher's approach and the experience levels of the students. This incredibly useful resource can be found at -- www.indiana.edu/~ensiweb/home.html.

Be sure to look at the Nature of Science lessons as well as the lessons on Evolution and on the Origin of Life as well as the links to Teaching Units and Resources. In the Resource section, a number of books are suggested. One of the most highly recommended is Teaching About Evolution and the Nature of Science by the National Academy of Sciences (1998). The book contains much of the philosophy and background information of the ENSI program as well as a sampling of lessons reflecting the title. (The ENSI web site expands that resource many times.)

Our colleagues at ENSI also recommend the following resources:
(1) NSTA Evolution Resources: www.nsta.org/publications/evolution.aspx (links, publications, Q&A);
(2) NABT Evolution Resources: www.nabt.org/sites/S1/index.php?p=211;
(3) PBS Evolution: www.pbs.org/wgbh/evolution/ Lessons and video clips including lessons from the ENSI collection.
(4) NOVA: Judgment Day: Intelligent Design On Trial: www.pbs.org/wgbh/nova/id/ This video provides information on why “intelligent design” is essentially a religious point of view, non-scientific, and inappropriate for science classes. See also Judgment Day Followup with suggestions for using the material on the NOVA site: www.indiana.edu/~ensiweb/judg.day.follow.html.
(5) HHMI (Howard Hughes Medical Institute) 2 free DVDs: "Evolution" and "Evolution - Miller" Also excellent video clips teachers can use in class. www.biointeractive.org

In the section of the ENSI website on Evolution, you will find a very wide variety of lessons in two major categories: Evolution Patterns and Evolution Processes.  Each lesson is summarized with a brief synopsis. Here are two brief examples followed by the actual lesson plans.

Teaching About Evolution & Special Creation (Mini-Lesson) A recent article by Anton Lawson presents a clever and interesting activity which provides vivid experience in the Fair-Test approach scientists use to determine the "Best Explanation." Students study a representative collection of fossils from the total geological column, look for patterns of fossil distributions, and raise testable questions about which idea (spontaneous generation, special creation, or evolution) best explains the origin of life's diversity and is consistent with the patterns observed in the fossil record.

Natural Selection: A Cumulative Process. A common criticism of natural selection is "how can it produce novel complex useful structures by pure random chance?" Darwin's answer to this "difficulty," (which he actually raised himself), was that selection is NOT a random process, and furthermore, it is cumulative, which he ably explained. Unfortunately, these facts are seldom included in typical classroom work on evolution. It should be a required part for every presentation of natural selection. This lesson provides an easy way for students to actually compare Darwin's cumulative non-random to actually compare Darwin's cumulative non-random selection with the non-cumulative version so often erroneously implied. Students working in pairs attempt to produce a full sequence of 13 cards of one suit (ace - to king). This must be done by shuffling the suit of cards for each round, then checking the cards. Half the teams must look for the full sequence each time, and repeat the process until this is accomplished. The other teams start to "build" their sequence by pulling the ace when it first appears as the top card, then adding to the stack whenever the "next" card for the sequence is shuffled to the top. Discussion clearly reveals how the second method mimics Darwinian natural selection, while the first does not.



A Mini-Lesson
A SCIENTIFIC APPROACH to
TEACHING ABOUT EVOLUTION & SPECIAL CREATION
Anton E. Lawson in ABT Journal: April 1999
SYNOPSIS A very interesting activity which looks at large paleontological patterns, is presented in a recent issue of the American Biology Teacher (April, 1999) by Anton Lawson (see reference below). The focus is more on critical thinking, forming testable hypotheses to challenge three "theories" about the origin of the diversity of life: spontaneous generation, special creation, and evolution. Many of the hypotheses can be tested simply by studying a sampling of fossils representative of the geological column, figuratively "gathered on a field trip into the Grand Canyon". Types and inexpensive sources of fossils you could use for this activity are presented in a companion article in the same issue of the ABT by James Platt (see reference).The author presents the activity using a "hypothetico-deductive type of learning cycle approach. It comes very close to being an activity which uses the "fair-test" approach outlined by Craig Nelson, of the ENSI faculty. A sample handout for students, along with tips and strategies for the teacher are clearly presented. Looks like a winner. If you try this activity, please give us your feedback.
CONCEPTS PRIMARY OBJECTIVES: 1. Enable students to discover evidence that generally supports evolution theory and fails to support the alternative explanations of special creation and spontaneous generation. 2. Improve students' understanding of the nature of science and improve their critical thinking skills.
MATERIALS None Noted
STUDENT HANDOUTS None Noted
TEACHING STRATEGY REFERENCES:
Lawson, Anton E. "A Scientific Approach to Teaching About Evolution & Special Creation". The American Biology Teacher, vol.61, no.4, April 1999, pages 266-274).
Platt, James E. "Putting Together Fossil Collections for 'Hands-On' Evolution Laboratories". The American Biology Teacher, vol.61, no.4, April 1999, pages 275-281).
ATTRIBUTION
See References Above

(Some of the ideas in this lesson may have been adapted from earlier, unacknowledged sources without our knowledge. If the reader believes this to be the case, please let us know, and appropriate corrections will be made. Thanks.)



A Mini-Lesson
Natural Selection....
a Cumulative Process...
it's in the cards!
or
Natural Selection Among Playing Cards

by Werner G. Heim Adapted from an article in
The American Biology Teacher, April 2002
SYNOPSIS A common criticism of natural selection is "how can it produce novel complex useful structures by pure random chance?" Darwin's answer to this "difficulty", (which he actually raised himself), was that selection is NOT a random process, and furthermore, it is cumulative, which he ably explained. Unfortunately, these facts are seldom included in typical classwork on evolution. It should be a required part for every presentation of natural selection.

This lesson provides an elegant, easy way for students to actually compare Darwin's cumulative non-random selection with the non-cumulative version so often erroneously implied. Students working in pairs attempt to produce a full sequence of 13 cards of one suit (ace - to king). This must be done by shuffling the suit of cards for each round, then checking the cards. Half the teams must look for the full sequence each time, and repeat the process until this is accomplished. The other teams start to "build" their sequence by pulling the ace when it first appears as the top card, then adding to the stack whenever the "next" card for the sequence is shuffled to the top. Discussion clearly reveals how the second method mimics Darwinian natural selection, while the first does not.
CONCEPTS Natural selection is a non-random process.
Evolution by natural selection is a cumulative process.
Cumulative selection can produce novel useful complex structures in relatively short periods of time.

MATERIALS:
Playing Cards:

Ideally (for teams of 2): 1 deck of cards for every 8 students (4 decks for a class of 32)
Acceptable (for teams of 4): 1 deck of cards for every 16 students (2 decks per class of 32)

scratch paper
envelopes (numbered: 1-16 for class of 32)
Background & Instructions (optional, could be handled orally) (pdf, and below)
Discussion Questions (optional; this could be handled orally) (pdf, and below)
Copy of Original Article on which this lesson is based (pdf)
Copy of this lesson (pdf)
For PDF versions of these materials, click here

TIME: One teaching period (40-50 minutes)
TEACHING PREPARATION & STRATEGY:
1. This is best done in conjunction with your introduction to natural selection. It could probably work as well before students study it, or after. Vary with different classes to see which works best. Let us know your conclusions.

Try introducing this lesson with an engaging story, like the one that teacher Rhoda Garcia uses (SEE BELOW)

2. Separate the cards into their 4 suits (all 13 cards for each suit), and place each set of 13 cards into a separate numbered envelope. Be sure you have enough sets for each team (of 2- 4). These sets can be re-used in subsequent periods.
3. Run off copies of instructions and discussion questions if desired (one set per team is fine).
4. Have scratch paper handy.

PROCEDURE:
1. Divide the class into teams (of 2-4 each)
2. Each team has at least a "recorder" and a "player".
3. The Recorder records the number of rounds played (tally mark for each)
4. Player(s): serve as shuffler, card handler, and/or observer.
5. You may introduce the "game" in various ways, depending on their background and experience.

a. Simply as "an interesting game" ...to be discussed as to its significance afterwards.
b. Announce that this is a "natural selection" simulation.
c. Point out that there is often confusion about natural selection being a random process, and many wonder how such a random process could produce useful complex structures in a reasonable time period.
d. Let them read the Background and Instructions, do the activity, then be prepared to discuss the questions in class.

6. Point out that Odd-Numbered teams will follow procedure A, and Even-Numbered teams must do procedure B. When a team achieves the goal (full sequence ace-to-king), the recorder reports the number of rounds taken to do it. One of the players thoroughly shuffles the cards, returns them to the envelope, and hands it in to the teacher. That team goes to work on the questions, preparing for class discussion.

7. About 5-10 minutes after the last B team has turned in its number of rounds played, call a halt to all remaining team activity. Each remaining set of cards is thoroughly shuffled, returned to its envelope, and this is handed in to the teacher. Display the number of rounds taken by each team, and begin to discuss the questions.

8. Above all, it is critical that students come away with a clear understanding that cumulative natural selection (as Darwin postulated) is a primary source for all new characteristics which have arisen since life began. The cumulative aspect of this is critical partly to show how it increases probabilities for increasingly complex or new combinations in relatively short time spans.

The other function of the cumulative feature is that it builds upon already-successful structures. This has also been called "successive selection of adaptive combinations." It's this cumulative feature which is key to its creative potential. Natural selection is often assumed (incorrectly) to be simply an elimination process, removing all the ill-adapted mutations as they appear. However, especially with details of molecular structures and processes being revealed and understood in diverse species, we have a growing body of observations most easily explained by descent with modification: evolution, occurring as a result of cumulative natural selection.

EPILOG AND COMMENTS:
1. It is important that no religious group (or even "creationists", and certainly no students) be ridiculed for their beliefs which maintain that evolution is wrong. Simply make the general true statement that there are many who misunderstand and may misrepresent evolution, and the point of this exercise is to clearly demonstrate what natural selection IS, and what it is NOT, primarily to clear up the widely held misconceptions. If asked where the misconceptions came from, explain that lots of new ideas can be misunderstood, and if someone writes articles presenting a misconception, many people accept it without questioning, and innocently repeat the ideas to others. This is especially true if the misconception seems to strengthen one's deeply held beliefs.

2. For example, you can mention that some may have heard that an organ such as an eye or an enzyme system could not have arisen by pure chance within a reasonable length of time, therefore evolution could not produce such complex structures or processes, much less complete organisms. The premise is correct, but the conclusion is wrong, because the basic assumption is wrong: evolutionary biology does NOT make this claim. Rather, it claims that such structures and processes arose largely by the accumulation of favorable mutations through the process of cumulative natural selection. Mutation is a chance process (within limits); selection is an anti-chance process. As the card game simulation showed, evolution by cumulative selection of favorable mutations (those that contribute to survival) is a relatively rapid process.

3. If you want to take an even closer look at the evolution of the eye, click here. Note that there are also many web sites which attempt to discredit these evolutionary explanations for eye evolution, but an element common to all is their total disregard for cumulative selection and how this alone increases probabilities profoundly.

TRY THIS ENGAGING INTRODUCTORY STORY

4. Florida teacher Rhoda Garcia has used this lesson very successfully. She precedes her introduction to natural selection with a delightful and engaging story, and has kindly offered to share it with you here. In fact, you might consider using such stories often in you teaching; kids of all ages enjoy a brief and well-told story, especially one witn a mystery twist.
Rhoda follows the story with the Natural Selection of Playing Cards lesson (next day), and follows that with the showing of a couple of short video clips from the first show in the PBS Evolution series: Darwin's Dangerous Idea (available in the DVD set, or as a single VHS tape for about $20). First she shows segment 11 (an 11' segment about 58' into program), then segment 13 (a 5' segment about 1hr 25' into the program; called segment 132 on the DVD). In that first segment, Ken Miller discusses eye evolution. In the second segment, biologist Ken Miller talks about his book, Finding Darwin's God and his belief that evolution and religion are compatible (he is a practicing Catholic). Miller is also co-author of the popular high school textbook, Biology. Teacher Garcia confirms the importance of the lesson, and says that the video clips help to round it out, answers some questions, and stimulates further discussion. Be sure to get the free Teachers Guideto the PBS series, and the several other excellent tapes, especially the Videos for Students, with 7 6' video clips to get discussion going (VHS tape, or direct viewing online).

EXTENSIONS & VARIATIONS:
1. Further evidence that species are the product of long term accumulated modifications can be found in the existence of pseudogenes. An excellent series of lessons available on this site enables students to experience the existence of pseudogenes by exploring the production of vitamin C in selected organisms and how this points to common ancestry. Take a look at the Pseudogenes Suite. The existence of pseudogenes also suggests that natural selection provides a more parsimonious explanation for the origin of species than does "intelligent design", a fairly recent version of what is essentially "scientific creationism", both of which are pseudoscience.
2. In conjunction with this lesson, provide your students with a natural selection simulation experience which takes them through at least a few generations of selection, e.g. "The Chips Are Down" natural selection lesson, or "Natural Selection of Bean Hunters."

REFERENCES: In addition to those listed in the article by Dr. Heim:
Dawkins, Richard. 1996. Climbing Mount Improbable. New York: Norton & Co. (see especially chapter 5)
A critical review of Behe's, Darwin's Black Box and the flaws in the author's "irreducible complexity" ideas. Includes examples of complex structures and molecular processes whose probable evolutionary sequence by cumulative selection have been figured out.

ATTRIBUTION

(Some of the ideas in this lesson may have been adapted from earlier, unacknowledged sources without our knowledge. If the reader believes this to be the case, please let us know, and appropriate corrections will be made. Thanks.)
Original article: "Natural Selection Among Playing Cards" by Werner G. Heim, in the April 2002 issue of The American Biology Teacher, vol. 64, no. 4, pages 276-278. Dr. Heim is Professor Emeritus of Biology, Department of Biology, The Colorado College, 14 East Cache La Poudre, Colorado Springs, Colorado 80903-3294;
E-mail: wheim@coloradocollege.edu

Lesson adapted for ENSIweb lesson by Larry Flammer, September 2002, with kind permission of NABT and the author.

Some updating and correcting: 6 April 2007.



The following is a useful handout for students to use for this lesson

BACKGROUND: When studying natural selection, the question often arises "how can pure chance create new complex structures or processes, much less new species?" Implied here is that natural selection is a process of pure chance, which is a common misconception; selection is not a matter of chance. Furthermore, natural selection does not say that all parts of a complex system must come together all at once. Natural selection is a stepwise constructive process which selectively builds new functional complex systems piece by piece, often just modifying previous systems to perform new functions. This truly creative ability of natural selection is often unappreciated or even misunderstood. The purpose of this lesson is for you to experience the effectiveness of cumulative natural selection, both in its creative potential, and in its increased efficiency, as reflected in how it increases the probability of complex systems to form.

PROCEDURE: Working in teams of 2-4 (as directed by your teacher), you will work with one suit of 13 cards (ace to king), shuffling the suit thoroughly for each round, and attempting to produce a particular sequence, following the rules assigned to your team, as follows:

FOR THE "A" TEAM, Odd-numbered sets:
1. Shuffle the cards thoroughly.
2. The recorder keeps track of the number of rounds played, increasing the count by one each time after the shuffling is completed.
3. Examine the cards. Are they in the order ace, 2, 3 ... jack, queen, king?
A. If so, inform the instructor of the recorder's count, i. e. of how many rounds have been played. Then stop as the goal has been reached.
B. If not, play another round, i. e. repeat steps 1., 2. and 3.

FOR THE "B" TEAM, Even-numbered sets:
1. Shuffle the cards thoroughly.
2. The recorder keeps track of the number of rounds played, increasing the count by one each time after the shuffling is completed.
3. Examine the cards. Is the top card an ace? If so, use it to start an "organism" stack. After this stack has been started ask whether the top card is the next one needed to construct the "organism." If, for example, the top (and only) card in the "organism" stack is the ace, then the next card needed is the two. Or if the top card in the "organism" stack is a seven, the next card needed is the eight, etc.
A. If the top card is the next card needed for the construction of the "organism," place it face up on the "organism" stack. Then repeat steps 1., 2. and 3.
B. If the top card is not the next card needed for the construction of the "organism," do not place any card on the "organism" stack. Instead repeat steps 1., 2., and 3.
4. When all the cards are in the organism stack (with the king on top), inform the teacher of the recorder's count, i.e. of how many rounds have been played. Then stop as the goal has been reached.

DISCUSSION: When you have achieved the target sequence (or when your teacher says to stop trying), return the cards to their envelope, and work on answering the discussion questions on a separate sheet:

Name_________________________________ Date____________ Per.____
CUMULATIVE NATURAL SELECTION DISCUSSION

When you have achieved the target sequence (or when your teacher says to stop trying), return the cards to their envelope, and work on answering the following questions. Be prepared to participate in class discussion of these questions.

1. In what ways is shuffling the equivalent of genetic mutations?

 In what ways is it not?

Does the model (card "game") distinguish between phenotype and genotype?

2. What is the one, critical respect in which the actions of the odd- and even-numbered teams differed?

What is the biological equivalent of this difference?

3. What, in the game, represented selection?

4. Why, in the game, was selection cumulative?

5. What was the average number of observed generations needed to evolve the organism by the even-numbered teams?

How does this figure compare to the calculated average number of generations? (Hint: On the average, in each round, the ace has a 1:13 chance of coming up, the "2" has a 1:12 chance, etc. The sum of the numbers from 1 to 13 is 91)

 6. What was the average number of observed generations needed to evolve the organism by the odd-numbered teams?

Do we have the data to answer this question?

What would be the calculated number of generations? (Hint: We need to have the ace show up first, with a probability of 1/13, then the "2," with a probability of 1/12 ... to the king with a probability of 1/1. 1/13 X 1/12 X 1/11 ... 1/1 is approximately 1.6X10^-10. 1/1.6X10^-10 is about 6.2X10^9. Shortcut: 13! = 6,227,020,800.)

 7. How many times faster is the evolution of our model organism with versus without cumulative selection among the mutations?

 8. What new understanding has this lesson taught you?




PATTERNS IN TIME by Larry Flammer, Evolution and the Nature of Science Institutes (ENSI)
Synopsis: Students gradually build a realistic sense of deep, geological time from familiar linear analogs, e.g. calendars and football fields. They also learn to associate the earliest fossils of specific groups of vertebrates with the geologic time of their emergence, on the now-familiar scale of relative distances from their school. From this, they discover the pattern of gradual vertebrate emergence and how well it consistently fits vertebrate phylogeny.

Principal concept: The fossil record shows a pattern of increasing diversity and large-scale changes through time.

Associated concepts: (1) The vast dimensions of deep geological time can be understood on a recognizable scale of familiar dimensions. (2) There are vast periods of time (tens of millions of years) that separate the emergence of each major vertebrate group. (3) Each successive vertebrate group possesses characteristics of the previous group, plus a few key modifications unique to the new group. For the complete lesson plan, see: www.indiana.edu/~ensiweb/lessons/pat.in.time.html


Science, Evolution and Creationism by the National Academy of Sciences, Washington, DC., 2008.
This is the third edition of the NASA's Science & Creationism. It is more comprehensive yet brief enough to use as a classroom supplement. It clearly presents and explains the essential features of the nature of science, evolution, creationism in all its variations, and their critical interactions. Highlights include a discussion of evolution as fact and theory, and an example of an industrial application of natural selection. There are excellent explanations of how molecular biology repeatedly confirms evolution.

“Canned lesson plans” for teaching evolution. The University of California and Indiana University both have collections of evolution lesson plans. Here is what the web site has to say about this topic. (www.swarthmore.edu/NatSci/cpurrin1/evolk12/teaching/resources.htm)

… good archives of evolution-related plans are scarce, and many of the ones that are available and classroom-tested are truly boring…. And many have been carefully sanitized to make them more palatable to anti-evolution supervisors and parents, with instances of "evolution" replaced with "change over time" …. Similarly, many lesson plans are well meaning in their attempts to "teach the controversy" yet only confuse students into believing that scientists actually find the topic of evolution even remotely controversial. Finally, many are outright damaging and inappropriate for a science class: crossword puzzles, coloring pages, etc. with overt religious themes…
Note: Links are provided for the following:
National Evolutionary Synthesis Center's curriculum resources
Evolution and the Nature of Science Institutes (ENSI) Lesson List: Evolution
Univ. of Calif. Museum of Paleontology "Explorations through time" lessons
Univ. of Calif. Museum of Paleontology "How to teach Evolution" (with plans)
National Health Museum Access Excellence Evolution Lessons
WGBH online evolution lessons
PBS TeacherSource: Science and Technology

Books about Evolution for Children
The Darwin Awards: Evolution in Action, by Wendy Northcutt. With over a quarter million copies in print and six months on The New York Times bestseller list, The Darwin Awards shows that readers crave humor. And what better place to find it than in the stories of those human beings who improve the gene pool by removing themselves from it in a sublimely idiotic fashion. Paperback, 352 pages

Darwin Awards II: Unnatural Selection, by Wendy Northcutt. In the spirit of Charles Darwin, the father of evolution, this new edition brings together a fresh collection of magnificent misadventures, honoring those who continue to improve our gene pool by removing themselves from it in a sublimely idiotic fashion. Paperback, 256 pages.

Darwin Awards III: Survival of the Fittest, by Wendy Northcutt. One of America's most popular humor series returns with a brand-new collection of hilariously macabre mishaps and misadventures. Honoring those who improve our gene pool by inadvertently removing themselves from it, this new release shows once more how uncommon common sense still is. Paperback, 252 pages.

Creationism's Trojan Horse, by Barbara Forrest & Paul R. Gross. In Creationism's Trojan Horse, Forrest and Gross document the agenda and advances of "Intelligent Design," the most recent manifestation of American science education's perennial affliction: creationism. They explain and analyze what "design theorists" call their "Wedge Strategy" -an attempt to substitute "theistic science" for natural science in the public mind. Hardcover, 401 pages.


Darwin and Evolution for Kids: His Life and Ideas with 21 Activities by Kristan Lawson. Chicago: Chicago Review Press. 2003.

The book, suitable for grades 5 – 9, begins with a description of Darwin's family life, privileged childhood, and education. His five-year voyage on the Beagle, during which he collected specimens to send back to England, is vividly described. The author places Darwin's ideas in context with those of other philosophical and scientific thinkers, tracing the work of both his predecessors and contemporaries.

She also explores how his subject's theories were accepted or rejected by others and discusses how the disagreement among scientists and creationists continues to the present time. The text is supplemented by 21 activities.. A list of resources for further research encourages students to delve deeper into the topic.