| Time: 60 minutes
Location: Outdoors
Learner Outcomes:
- Students will be
able to describe the steps of the scientific method.
- Students will be
able to define a healthy water habitat.
Vocabulary:
- Water
- scientific method,
- field researcher.
Materials
- Diagram and explanations
of the scientific method.
- Plastic bottles
- Mini Microscopes
- Collection containers.
- Waders
Preparation
- Gather and organize
visual aids describing the scientific method.
- Gather and Organize
field scopes, trays and containers .
- Have students make
predictions prior to collection.
Discuss
- Macro- invertebrate
populations and how their presence indicates a healthy water ecosystem
and how they provide life for other plants and animals in the wetlands
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Welcome to the
National Wildlife Refuge
Do. . .
- Organize
students into a seated circle, inside or outside depending on the weather.
Explain. . .
Water World :Using the tools provided students will investigate
their water habitat, They will decide on a research problem, forma hypothesis,
collect and disseminate their data and finally draw a conclusion.
Ask. . .
- What tells us whether
or not the body of water is healthy?
Field
Research
Explain. . .
- Today at the refuge
we will be doing what's called field research. To do field research
we need to learn about a very important tool called the scientific method.
- What is the scientific
method? A process used by scientists to learn more about the world.
Prior knowledge/Observations, Research Question, Hypothesis, Methods,
Data Collection, Analysis and Conclusions.
- To help us learn
more about the scientific method we are going to do some field research
right now. Our research question is: From our water sample can we tell
if this is healthy body of water?
- First we need to
explore what we already know or our prior knowledge about both water
and water habitats or ecosystems. What types of healthy water are there?
Do.
. .
- Choose two students
(girl and boy) to be Sir and Madame Biologists- these students will
record the numbers of organism found in the samples. Have them make
a prediction about how many organisms they think they will find in the
water samples The students will take observations and record number
of organisms.
- Divide the rest
of the students into groups of two. One two to collect the sample from
pond or stream and the other to prepare sample for viewing.
- Have the collection
agents write down any observations they make about surrounding-
water depth, speed, etc.
- Have the group
describe the water sample it self ( color, visual content).
- Finally analyze
the sample (remove a small sample from container place in a Petri
dish and describe the organisms- draw and write about them in journals)
- Have the biologists
report on what they observed?
- Collect samples
from at least three sites, so all researchers have a chance to all parts
of process.
- Correlate data
in some way using graph or table.
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