Introduction- Day 1:
1. Introduce the activity by assigning half of the students
the article “Arsenic in Drinking Water” and
the other half the article, “Arsenic: In Search
of an Antidote to a Global Poison”. Have them read
the articles and prepare to answer the discussion questions
with a partner (a student who read the other article). “Arsenic
Contamination Global Chart”
After students have read their assigned article they
will discuss the following
questions with a partner:
How does arsenic contaminate drinking water”?
What are the health effects of high exposure to arsenic?
parts of the world have arsenic in their water?
Hand out “Arsenic Contamination Global Chart” to
every student and discuss with students:
How is water contamination a significant global issue?
What do you feel should be the role of the global
community in dealing with this issue? What effect
and geographic location have on dealing with this
Conclude the lesson by telling the students that they
will be looking at this issue from the perspective
the country that they were assigned in the previous
Day 2: Give students the following scenario:
As a Peace Corps volunteer, you are to research your assigned
country to find out if there is enough safe drinking water
for the community. Your research will analyze any problems
that the residents of your country must deal with in order
to ensure that there is safe, contaminant-free water for
everyone. To begin the project you must answer the following
questions in order to develop an understanding of the impact
of water in your community.
to the website directed by your teacher to locate
information about the source of clean
water in your community.
What is the primary source of drinking water? (wells,
rivers, surface water etc.).
2. Is the supply of water a concern for the residents
of your country? Explain.
3. How significant is climate to the demand for water
in your country? Explain.
4. How significant is water to the economic development
in your country?
5. In a paragraph describe how arsenic contaminated
the water supply and its impact on the lives of the
6. How is this problem being resolved? Is there a
solution that has been discovered?
the information you have gathered you will create
a postcard about your
The front of the card should have one or more illustrations
that represent some aspect
of your country: culture, physical
features, wildlife, festivals, customs,
2. On the back of your postcard you will
write a note home, from the point
of view of a Peace Corps
the issue of arsenic contamination
of the water supply in the country you have
assigned. You must include
three pieces of information addressed
in the research questions.
to teacher: It is recommended that postcards be at
_ page in order to allow enough
room for the information. Students may want to design
their postcards on the computer
to allow them to cut and paste
images from their country.
Students will “send” postcards to students from
other countries: Have a “card exchange” where
students must exchange cards with students from at least
six different countries. Students can verify that they have
read other postcards by initialing the cards that they read.
After the “card exchange” students will turn
in their post cards for the assessment.
postcards will be assessed for content, originality and
creativity. The teacher may also want to assign points
for the “card exchange”