In working toward the eradication of science, the creationists try to
corrupt the public's understanding of what science is, how science
works, and what science has learned. Their most conspicuous efforts
are aimed at eroding the teaching of science in public schools. They
promote curricula that misrepresent science, they demand that
teachers present scientific constructs and biblical tales as
equivalent alternatives, they try to prevent the teaching of any
science that contravenes biblical lore, and they try to force the
schools to disseminate Bible stories that have been cloaked in
"scientific" disguises. They are especially vigorous in their
attempts to undermine or stifle the teaching of scientific
information about organic evolution and the history of life on Earth.
(See, for example: "Alabama Will Use Schoolbooks to Spread Lies and
Foster Creationism" in The Textbook Letter for
November-December 1995; and "Combating Creationism in a Louisiana School
System" in The Textbook Letter for July-August 1997.)
In response to the creationists' continuing attacks on science
education, the National Academy of Sciences has issued a 140-page
booklet that seeks to provide "information and resources that
teachers and administrators can use to inform themselves, their
students, parents, and others about evolution and the role of science
in human affairs." Titled Teaching About Evolution and the Nature
of Science, the booklet was released on 9 April.
This is the NAS's second important publication aimed at helping
educators to resist the creationists' assaults. In 1984 the NAS
produced a 28-page booklet called Science and Creationism: A View
from the National Academy of Sciences and distributed it widely
to teachers and school-district officials. That booklet concentrated
on describing scientific findings, on showing how those findings
supported scientific inferences about the history of Earth and
Earth's organisms, and on debunking some of the creationists'
pseudoscience. Teaching About Evolution covers some of the
same ground, but it also offers a lot of practical pedagogic
material. Here are two reviews of the NAS's new product.
For a biology teacher, however, an open house can be stressful, as I
know from some of my personal experiences during the twenty years
when I taught biology in California high schools. A biology teacher
must be ready to confront parents who have rejected all our
scientific knowledge of organic evolution, and who declare that they
don't want their children to hear anything about evolution in any
science class. These people are motivated by religious convictions,
and they can be intimidating -- especially to teachers whose own
knowledge of science is shaky. Some of these teachers, sad to say,
respond to the intimidation by choosing the path of least resistance:
They downplay evolution during their teaching, or ignore it
entirely, even though evolution is biology's central, unifying idea.
It is good news, then, that the National Academy of Sciences (NAS)
has published Teaching About Evolution and the Nature of
Science, a paperback guidebook that provides a wealth of
scientific information and pedagogic support that will be useful to
teachers at every grade level.
Teaching About Evolution comprises seven chapters and five
appendices. It explains science as a way of knowing about the
natural world, summarizes a large amount of scientific evidence
pertaining to our present understanding of evolution, and describes
engaging hands-on and minds-on activities that help students learn
about evolution and about scientific inquiry. It also considers --
by presenting answers to frequently asked questions -- some of the
scientific, educational and legal issues surrounding the teaching of
evolutionary biology in schools. I wish that I had had a booklet
like this one during my own career in the classroom, especially
during the first few years. It would have made me a more confident,
more effective biology teacher.
Though Teaching About Evolution is commendable in most
respects, it also has an aspect that I personally find bothersome: It
reproduces many items from another NAS publication, National
Science Education Standards (which was created by the National
Research Council, was copyrighted in 1996 by the NAS, and was issued
by the National Academy Press). The writers of Teaching About
Evolution are, I think, trying to push the National Science
Education Standards document. Chapter 4 of Teaching About
Evolution is devoted entirely to "Evolution and the National
Science Education Standards," and items from the "standards" are
quoted in chapter 7 as well.
All this seems gratuitous. There is no necessary connection between
the "standards" document and the teaching of evolutionary biology,
and knowledgeable educators can teach about evolution without using
that document at all.
I also am bothered by the NAS writers' practice of referring to
National Science Education Standards without explaining that
this title is misleading. As readers of The Textbook Letter
know, there are no national standards in science or any other
subject. The federal program for establishing national
subject-matter standards collapsed in 1995 and was formally abolished in
1996, and no national standards were ever certified. By failing to
explain this, the writers of Teaching About Evolution leave
the reader with the misleading impression that National Science
Education Standards is truly a set of national science-education
standards, with some kind of official status -- the standards
that must be used in developing lessons and measuring outcomes.
[Editor's note: To learn more about the failure of the federal effort to erect national
standards, see the review of Glencoe World Geography in
The Textbook Letter for January-February 1998.]
My last complaint concerns chapter 7, "Selecting Instructional
Materials." The first section of this chapter allegedly presents
ten criteria for evaluating "school science programs and the design
of instructional materials," but some of the criteria are less than
useful. They are larded with edu-speak but they offer little or no
substantive guidance. As examples I cite "Criterion 3: An
Integration of Psychological Principles Relative to Cognition,
Motivation, Development, and Social Psychology" and "Criterion 5: An
Array of Opportunities to Develop Knowledge, Understanding, and
Abilities Associated with Different Dimensions of Scientific
Literacy." Such trendy jargon is not notably helpful in evaluating
instructional materials.
Another useless entry is "Criterion 9: Thorough Field Testing and
Review for Scientific Accuracy and Pedagogic Quality." How can
educators possibly know whether an instructional product has
undergone any testing at all, let alone "thorough" testing? One of
the best-known jokes of the schoolbook industry is that publishers
equip their books with long lists of "reviewers" and "field test
teachers," but the lists are misleading. Is the NAS suggesting that
educators should give credence to these lists?
In contrast, the chapter's second section, called "Analyzing
Instructional Materials," gives advice that is specific and useful.
Analysis procedures are described and then are incorporated into
worksheets that teachers can use when they put the procedures into
practice. Moreover, teachers can adapt these procedures to the
evaluation of science materials in general -- not just materials that
concentrate on evolution and the nature of science.
Teaching About Evolution also has some valuable lessons for
writers and editors of textbooks. It presents scientific information
in clear, concise ways, with interesting examples. Its photographs
and other illustrations are easy to understand, appropriately
captioned, and tied to the narrative text. And the activities that
this booklet describes are practical and really serve to reinforce
and extend students' understanding of basic concepts.
As a biology teacher with years of classroom experience (and as a
veteran of many an open house), I am pleased to recommend Teaching
About Evolution as a source of solid scientific information and
practical pedagogic support. When teachers have to fight ignorance
and intimidation, they need accurate and up-to-date information to
use as ammunition. Teaching About Evolution provides it in
abundance.
This bit of proverbial advice points to the essential difference
between scientists and creationists. Scientists ask questions.
Creationists prefer not to ask anything, rather than get an answer
that seems like no.
The questions that scientists ask take the form of hypotheses, and
the answers come when the hypotheses are compared with what we see in
nature.
Karl Popper, in a famous but simplistic description of science, said
that scientific hypotheses must be falsifiable. Unfortunately, that
word "falsifiable" has often been misunderstood, and it has even been
taken to mean that all the things said by scientists are false. What
Popper actually meant was that scientists should propose questions,
or hypotheses, that invite nature to answer yes or no.
If nature answers no, then the hypothesis is false. Questions
like "Is the Moon bigger than the Sun?" can clearly be answered in a
yes-or-no way. Questions like "How old is God?"
clearly cannot. Questions like "How old is Earth?" are a bit
trickier. But if we ask "Is there any evidence that Earth is less
than a billion years old?" -- a yes-or-no question --
we can take a scientific approach to the subject of Earth's age.
This reliance on testable propositions, stated as
yes-or-no questions, is something that students have to understand
about the nature of science. Scientists, to be scientists, must ask
questions, and each question must be put so that it allows the
possibility that nature will answer no.
Scientists aren't the only people who ask questions, of course.
Educators ask questions too, and one of the questions that educators
have posed to scientists is: Why should we teach our students about
organic evolution? That question is a good one -- it's so good that
the National Academy of Sciences has tried to answer it in a new
booklet called Teaching About Evolution and the Nature of
Science. In the booklet's first chapter, the NAS writers begin
by restating the problem:
But things don't end there, the writers say, for the immediate
answers lead students (and scientists) to ask deeper questions:
Hence students must study evolution.
But things don't end there, either -- because when students study
evolution, it is inevitable that some of them will ask questions
about received wisdom. The most common question is whether we find
the biblical account of the origin of living things to be consistent
with a scientific perception of evolution. The short answer is
no.
In the battle over the teaching of evolutionary biology in the
schools, there are extremists on both sides. The creationists cling
to the language and logic of the 17th century and to an antiquated
dualism, dating from medieval times, which holds that the spirit
world and the material world coexist but are entirely independent.
According to that doctrine, one can believe whatever one chooses to
believe about the spirit world, regardless of what one sees in
nature. On the opposing side, the creationists' adversaries include
radical materialists like Richard Dawkins and E.O. Wilson, who have
neither the vocabulary to address the creationists nor the will to
take them seriously as persons. (Dawkins and Wilson are among the
authors whose books are cited in the NAS booklet's Appendix D,
"References for Further Reading and Other Resources.") The
creationists lump all scientists together and regard them all as
radical materialists, while the radical materialists lump all
religionists together and regard them all as creationists.
The NAS writers know that not all religionists are creationists, and
they note this in their preface: "[M]ost religious communities,"
they report, "do not hold that the concept of evolution is at odds
with their descriptions of creation and human origins." In the later
parts of the booklet, however, that point seems to get lost. Even
when the writers quote a long passage composed by the biologist
Ernst Mayr, who is a careful and mature thinker, things are not
right. The passage, from Mayr's book This Is Biology: The Science
of the Living World (1997), purports to analyze "How Science
Differs from Theology," but Mayr misses the diversity and ferment
that exist among religious believers. He generalizes about "revealed
religions" as if they all shared a single epistemology and a single
mode of exegesis. They don't.
In my view, the failure to come to grips with the diversity of
religious thinking is the NAS booklet's greatest weakness. Though
the appendix of "References for Further Reading and Other Resources"
lists about 75 books, I see none by anyone whom I would recognize as
a theologian. Let me recommend, as a starting place, Ian Barbour's
book Religion in an Age of Science, published in 1990 by
HarperCollins.
Now, what are the booklet's strengths?
First, the NAS writers give a comprehensible introduction to the
language of science, emphasizing what words mean in the context of
evolutionary biology, and they give a fair discussion of the nature
of scientific inquiry. This is an important step.
A chapter of more than 40 pages provides suggested activities for
teaching about evolution and the nature of science, and some of these
seem really good. Activity 2, for instance, deals with the
appearance of insecticide resistance in a population of flies in a
dairy barn. This activity is a guided inquiry in which students form
hypotheses about environmental variables, the potency of the
insecticide, and natural selection. Activity 3, dealing with a
predator-prey relationship, can teach many things about "survival of
the fittest." It is similar to an activity which is used in
introductory biology classes at my own university, and which works
well.
On the other hand, the activity titled "Proposing the Theory of
Biological Evolution: Historical Perspective" -- built around
excerpts from writings of Lamarck, Darwin and Wallace -- is dubious.
Poor old Lamarck takes another beating, and the writers ignore some
inconvenient facts: Darwin was familiar with Lamarck's ideas about
the mutability of species; Darwin accepted the inheritance of
acquired traits (just as Lamarck did); and Darwin, in the third
edition of On the Origin of Species, gave high praise to the
"justly-celebrated naturalist" Lamarck. Since the writers don't
acknowledge these points, their "historical perspective" reinforces
the common misconception that Darwin and Lamarck were antagonists.
[Editor's note: See "The Imaginary Lamarck: A Look at Bogus 'History'
in Schoolbooks" in The Textbook Letter for September-October
1994.]
A practical aid to science educators is the booklet's section on
selecting instructional materials. The worksheets provided here will
be very helpful to any textbook-evaluation committee that takes its
charge seriously. The committee members will still have to know the
subject matter well, of course, so that they can distinguish
knowledgeable exposition from clichés and idle "mentioning," but
proper use of the worksheets will ensure that books will be examined
carefully. This section alone can be worth the price of the booklet.
Anne C. Westwater retired in 1997 from a twenty-year career as a
science teacher, including some fifteen years as a teacher of
biology, earth science and environmental science at Napa High School
(in Napa, California). She now lives at The Sea Ranch (in Sonoma
County, California) and works as a consultant in the application of
brain research to educational practice.
Lawrence Davis is a professor in the Department of Biochemistry at
Kansas State University (Manhattan, Kansas). His scientific
interests include biological nitrogen fixation and the application of
plants to the bioremediation of soils. He has taught plant genetics
and plant physiology to high-school teachers for many years.
National Academy's New Booklet
Teaching About Evolution
Is Intended to Support Educators
in Repelling Creationists' Attacks
and the Nature of Science
1998. 140 pages. ISBN: 0-309-06364-7.
National Academy Press, Box 285, Washington, DC 20055.
This Timely Publication Is a Boon
Editor's Introduction -- Creationism is a fundamentalist
political movement. The creationists seek to impose onto our entire
population, by political means, a religion that revolves around a
literal reading of the King James Version of the Holy Bible. The
name creationism reflects the special emphasis that this
movement's adherents give to the creation myths in the Bible's first
section, the Book of Genesis. The creationists believe that the
Genesis myths are accurate historical accounts of real events, and
they ardently denounce all the scientific findings that have
discredited that belief -- indeed, they ardently denounce science
itself. They want ultimately to abolish science and to replace it
with a system of religious pseudoscience that furnishes bogus
"evidences" to affirm biblical narratives.
to Science Teachers at Every Level
Anne C. Westwater
In many a public school, it is customary to hold an open house for
parents, or perhaps for parents and students together, a few weeks
after the start of the school year. The open house is an opportunity
for teachers and parents to meet informally -- and for most teachers,
it is a pleasant event (provided they can recall their new students'
names and can avoid premature discussions of grades).
While It's Successful in Some Ways,
It Fails In Its Treatment of ReligionLawrence Davis
"If you can't take no for an answer, don't ask the question."
Why is it so important to teach evolution? After all, many
questions in biology can be answered without mentioning evolution:
How do birds fly? How can certain plants grow in the desert? Why do
children resemble their parents? Each of these questions has an
immediate answer . . . .
How did things come to be that way? What is the advantage to
birds of flying? How did desert plants come to differ from others?
How did an individual organism come to have its particular genetic
endowment? Answering questions like those requires a historical
context -- a framework of understanding that recognizes change
through time.