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Children are naturally
very curious. In our programs at the Savannah River Ecology Laboratory we
see evidence of that every day—kids want to know “How big is that
snake?” and “How deep is that mud?”, not to mention the
always entertaining “If a great white shark got in a fight with a polar
bear…?” For many years we’ve answered these questions [1]
as they come our way. But we, too, have wondered—how can we do better
at teaching kids to answer their own questions? How can we assist classroom
teachers in teaching their students to “do science?”
The life/earth sciences
activities described in the web pages that follow represent our initial effort
to aid young students in acquiring the inquiry skills needed to do science.
“Inquiry-centered science” [2] is crucial to the development of
these skills. Although each of the activities we outline has its associated
content, all modules have at their center a 45-80 minute long hands-on activity
that engages kids. We want them to DO science. While recognizing
that there are questions in a number of areas that science cannot answer,
questions about the way the natural world works are ideally suited for scientific
investigation.
Science doesn’t
have to be complicated and jargon-rich (especially for elementary school students).
In all activities we emphasize that science as a process is fairly straightforward.
In fact, our favorite definition of science comes from the physicist Richard
Feynman, who described science as “a special method of finding things
out.” [3] Very challenging, but pretty simple.
The phrase “THE
scientific method” may be a bit misleading. Biologists study variation
in the traits of organisms, and the very methods that scientists use to ask
and answer questions might be viewed as a variable trait. Some scientists
do things one way, some another; some emphasize experimental tests, some observations,
some complex mathematical models. But there are fundamental steps in the scientific
process that almost all scientists use, and those steps are what we highlight
as “the methodS of science.” The integral components
are: observing, wondering, did we say observing?, hypothesizing or predicting,
experimenting, analyzing, concluding, inferring, communicating, observing,
wondering…Unfortunately there is no explicit step in the method(s) for
“having an idea” or “creativity” or “imagination.”
But basically science in the absence of imagination isn’t science, as
creativity is a necessary component in every step of the process of "doing
science."
All the activities we
use to teach students how to "do science" stress the following components
of the Methods of Science:
- Observation of nature
- Wondering why?
- Forming hypotheses
(in an "If... Then..." format) and making predictions
- Collecting data, including
defining dependent vs. independent variables, using appropriate experimental
controls, and performing repeated trials
- Analyzing data
- Deriving conclusions
- Asking the next question
By using the scientific
method repeatedly in a variety of hands-on science activities over the course
of a school year we hope that students and their teachers will view "doing
science" as not only an enjoyable activity, but also a useful method
to use to learn about nature and how things work.
[1] In an underwater “caged death match” the shark will win.
[2] Science for All Children, 1997, National Academy Press.
[3] The Meaning of It All: Thoughts of a Citizen Scientist. 1998.
Michelle and Carl Feynman. Perseus Books, Reading, MA
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