Transcript Inferences and Observations

Warm-up~ Observation Challenge
Mystery Observation
Science\Balloons.ppt
• Get your ISN: Take
out a half sheet of
paper and number it
1-11. Do NOT write
your warm-up in your
interactive notebook!
Inferences and
Observations
“You can observe a lot just by watching”
-Yogi Berra (famous baseball player)
Goal: Describe the scientific
processes of observing and
inferring
• Observations use one or more of your
senses (sight, hearing, smell, taste and
touch) to gather information about the
world.
• Qualitative: Descriptions that do not
use numbers (colors, smell, taste,
textures, sounds).
• Quantitative: Observations that use
numbers (counting, measuring, weighing).
• Tips for making observations:
– Use your five senses…i.e. qualitative
– Whenever possible, count or use measuring tools to
make quantitative observations.
• Estimate if no tools are available!
• Make sure that your observations are accurate
and objective!
• Do the following describe
qualitative or quantitative
observations?
1- The bird has 2 wings.
2- Ms. J has Blue eyes.
3- The flower has 7 petals.
4- The fish feels slimy.
5- The sloth weighs 217lbs.
6- The red flower has 2 green
leaves on its stem.
7- The egg smells.
8- The road is long.
1.
2.
3.
4.
5.
6.
7.
8.
Quantitative
Qualitative
Quantitative
Qualitative
Quantitative
Both~ Red flower
(qualitative, 2 leaves~
quantitative)
Qualitative
Qualitative (How long?)
• How could you make the following
example into a quantitative one?
• The fish is smelly.
Ex: Add a scale, such as 1-5, 5 being the worst.
What would be wrong with an observation such
as “the burning bag smelled nasty”?
Nasty is a relative term. What is nasty to one, is not to another.
To correct this, we would change it to: The burning bag smelled like
rotten eggs
Take a minute to
list some observations
of the given picture.
ISN Entry
• Cut out your notes
and glue them on
page 24 in your isn.
Once you have
finished gluing you
will need to create a
venn diagram on the
left side of your
notebook.
• An example diagram
will be shown on the
next slide~ please
wait until everyone is
done gluing and
cutting
Venn Diagram~ Comparing
Quantitative vs. Qualitative
Observations
Quantitative
Qualitative
Lab Skills Worksheet Warm-Up
• Get your ISN and the Lab Skills mini-notebook I
passed out yesterday (if I didn’t pass them out
hrs. 2,5,and 6) you’ll get yours in a minute.
• Complete the lab skills worksheet page 11 and
12 entitled Quantitative and Qualitative
Observations. This will act as a quick review of
what we learned yesterday.
• WORK ON THIS INDIVIDUALLY! We will go
over this warm-up in 15 minutes!
Learning Objective: To explain the
scientific process of inferring.
• Open your ISN to page 26. Write the
above learning objective and date in the
appropriate spots!
• Follow along with your notes and fill in
necessary information as I go through
today’s lecture.
• Do not glue or cut anything until we are
entirely finished with the lesson!!!
• Inferring is the explaining or
interpreting of an observation or
statement.
• Inferences are based on past
experiences and prior knowledge. They
are often changed when new
observations are made.
– Inferences help to explain our
observations!
• Tips for making an inference:
– Make your inference based on accurate qualitative or
quantitative observations.
– Combine your observations with knowledge or
experience to make your inference.
– Try to make more that one logical inference from the
same observation.
– Decide what new information you need to show
whether your inferences are true.
– Gather more information…. If necessary.
– Be prepared to modify, reject or revise your
inference.
• Examples: The grass on the school’s front lawn is wet.
– Possible Inferences
•
•
•
•
It rained
The sprinkler was on
There is dew on the grass from the morning
A dog urinated on the grass
• All of these inferences could possibly explain why the
grass is wet. They are all based on prior experiences.
We have all seen rain, sprinklers, dew, the dog doing
its thing…
What inferences could be made from the
following observation:
“The school fire alarm is going off.”
What inferences could be made from the
following observation:
“Traffic on the highway is moving really
slow.”
List some inferences that could be made about this picture.
Lab Skills Warm-up
Open your lab skills notebook to page 15.