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Life's Greatest Miracle
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Classroom Activity
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Objective
To identify the effects of maternal consumption of alcohol at
various stages of pregnancy.
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copy of "Developmental Chart" student handout (PDF
or
HTML)
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copy of "Fetal Alcohol Syndrome Facts" student handout (PDF
or
HTML)
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copy of " Case Studies" student handout (PDF
or
HTML)
- Access to print and Internet resources
Part I
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Discuss with students the idea that a developing embryo needs a
certain environment to evolve into a healthy fetus and healthy
baby. It requires the proper nutrients and care to develop
without incident. Tell students that in this activity, they will
review the developmental process and the effect one
chemical—alcohol—can have on that process.
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Read the student handouts to familiarize yourself with the steps
students will take. Distribute copies of the "Developmental
Chart" student handout. With students, review the developmental
stages shown. (If students have seen the program, you may want
to have them augment this chart with information from the show.)
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Distribute copies of the "Fetal Alcohol Syndrome Facts" student
handout.
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Discuss elements of Fetal Alcohol Syndrome (FAS), and Fetal
Alcohol Effect (FAE) (See
Activity Answer for more information.)
Make clear to students that there may be varying degrees of FAS
and FAE. Diagnosis may be easy in severe cases and difficult in
less severe cases.
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Have students use the "Developmental Chart" and "Fetal Alcohol
Syndrome Facts" student handouts to answer the questions on the
"Fetal Alcohol Syndrome Facts" student handout. Have them also
discuss the impact of maternal alcohol consumption during the
first, second, and third trimesters on facial features, brain
development, and growth.
Part II
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Organize students into groups. Distribute the "Case Studies"
student handout. Advise them that they will be playing the part
of adoption counselors. Each group will focus on one of the four
case studies.
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Have students gather additional information for their case
studies from print and Internet resources.
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Ask each group to present its case information and concerns
about the case to the class.
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As an extension, have students explore the effects of prenatal
maternal smoking or drug use on embryonic and fetal development
and growth.
Embryonic development begins with simple cell division and proceeds
through cell differentiation, morphogenesis, and growth.
Drinking alcohol can have adverse effects on a developing embryo,
including Fetal Alcohol Syndrome (FAS) and Fetal Alcohol Effect
(FAE). According to the Centers for Disease Control and Prevention,
FAS is "a disorder characterized by growth retardation, facial
abnormalities, and central nervous system dysfunction." FAE is
characterized by a less severe set of these symptoms. FAS and FAE
are irreversible, lifelong conditions.
In cases of FAS, heavy drinking during the early weeks of pregnancy
is most likely to cause the classic FAS facial features, which
include a flattened filtrum (the area between the lip and the nose),
small, widely-spaced eyes, a thin upper lip, and a short, upturned
nose. Drinking later in pregnancy will affect the growth of the
fetus and the development of the central nervous system.
All drinks containing alcohol can harm an unborn embryo or fetus.
Factors that affect the severity of FAS include genetic variations,
the amount and the timing of drinking during pregnancy, and the use
of other drugs.
FAS is a syndrome of related symptoms. It is not possible to predict
which of them will occur in a particular child. Some of the concerns
might be:
Adam—Because Adam's mother drank heavily early in
pregnancy and continued frequent binge drinking, Adam has a higher
probability of having FAS than of a newborn whose mother did not
drink, including the facial features, small head size, growth and
behavioral problems, and mental retardation.
Barbie—Barbie's mother stopped drinking, but damage may
already have been done during the first three weeks of her
pregnancy, especially since her drinking during that time was heavy.
Carlos—Because Carlos's mother did not drink heavily,
he may escape having FAS. He may still suffer some effects from her
drinking, which could lead to a diagnosis of FAE.
Danielle—Like Carlos, Danielle is less likely to suffer
from FAS. She may experience growth or behavioral problems, but is
not likely to have the small head size and distinctive facial
features associated with FAS.
When Talking About FAS and FAE
Some students may be affected to varying degrees by familial
experience of alcoholism. All students may know people for whom
these are daily life issues. Try to be sensitive to students'
feelings by keeping discussion theoretical and general, rather than
personal. Remind students that not every child of an alcoholic
mother is born with FAS or FAE. The March of Dimes estimates that
each year about 50,000 babies born in the United States have some
degree of alcohol-related damage.
Book
Dorris, Michael.
The Broken Cord: A Family's Ongoing Struggle With Fetal Alcohol
Syndrome.
New York: HarperCollins (paperback), 1990.
Recounts an adoptive father's experience of living with an FAS
child.
Web Sites
NOVA Online—Life's Greatest Miracle
http://www.pbs.org/nova/miracle/
On this Web site, join a debate between two scientists about using
embryonic stem cells for research, learn the many ways doctors
monitor a developing fetus, follow a woman in labor, see mitosis and
meiosis in action, and follow the cellular growth of sex
determination.
CDC—Fetal Alcohol Syndrome
http://www.cdc.gov/ncbddd/fas/
Summarizes basic information about FAS.
March of Dimes: Drinking During Pregnancy
http://www.marchofdimes.com/pnhec/159_530.asp
Provides a comprehensive overview of the effects of alcohol use
during pregnancy, with links to related sites on the effects of
smoking and cocaine use and to additional information on all types
of birth defects.
The Visible Embryo
http://www.visembryo.com/baby/index.html
Features a spiral showing week-by-week development, and includes
online games related to conception and fetal development.
These Activities align with the following National Science Education
Standards:
Grades 5-8
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Science Standard C: Life Science
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Structure and function in living systems
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Cells carry on the many functions needed to sustain life. They
grow and divide, thereby producing more cells. This requires
they take in nutrients, which they use to provide energy for the
work that cells do and to make the materials that a cell or an
organism needs.
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Science Standard F: Science in Personal and Social
Perspectives
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Personal Health
Grades 9-12
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Science Standard C: Life Science
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The cell
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Cells can differentiate, and complex multicellular organisms are
formed as a highly organized arrangement of differentiated
cells. In the development of these multicellular organisms, the
progeny from a single cell form an embryo in which the cells
multiply and differentiate to form the many specialized cells,
tissues, and organs that comprise the final organism.
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Science Standard F: Science in Personal and Social
Perspectives
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Personal and community health
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An individual's mood and behavior may be modified by substances.
The modification may be beneficial or detrimental depending on
the motives, type of substance, duration of use, pattern of use,
level of influence, and short- and long-term effects.
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The Embryo Takes Shape
Explore in this Teachers' Domain
video segment
(7m 47s) the developmental process of an embryo beginning just
two weeks after fertilization.
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