Transcript PowerPoint Presentation - KREISELMANBIOLOGY

The five images are all of the
same thing.
1.What could that thing be?
2.How come it can look in so
many different ways?
3. Is this thing alive? How can
you tell?
Journal
Write on any paper,
copy to notebook later) 08.14.12
Information on Index Card:
Name: (Last, First)_ Period: ___
Address: ___________________
Parents/Guardians:_____,______
Phone (home): _________
Phone (other, cell): ___________
Email (if applies): _____________
Journal
Consider the items on the tray.
1)Categorize each item to
“Living” or “Non-living”.
2) For each item – explain your
choice in a complete sentence.
In your group, agree on
properties that ALL living things
must have to be called alive. NO
MORE THAN FIVE.
Write these criteria on one blank
paper with your names on it.
Exchange your paper with
another group. Take your back,
Revise your list.
FIVE CRITERIA for LIFE
All living things….
1. Reproduce, Develop  DNA
2. Consume Energy  Respire,
Feed
3. Respond to the environment
4. Maintain steady internal
conditions  Made of cells.
5. Evolve
Back to our samples – which
is a living thing?
Return to your observation on
the tray.
* Correct your categorization.
- The things that you consider
“alive” – do they match all the
textbook’s criteria?
* Improve your explanation for
non-living items: what are they
missing to be called alive?
Add to your journal answer.
From the homework assignment:
Share your lists with your
neighbor.
-Do you agree about all of the
examples?
-Point out 3 examples that you
have difficulty to decide about.
-Share with the class: what is
common to those difficult
examples?
News alert!
An outbreak of stomach ache
started at Anyville. The local
health authorities suspect it has
to do with the water. To examine
the water they have run a number
of tests. In one test, they took
water samples and spread them
on agar plates…..
1. DRAW the result.
2. Respond to the results of the
test (What is in the Petri dish with
the agar.).
Whatever you write, it has to be
NO LESS THAN FIVE LINES.
Next Step: Rotate your notebook
amongst your team members.
Add a sentence to each
notebook. Add your initials.
What kind of responses did we
have in the class?
Observations
Questions
Possible Explanations
1.Why did the bacteria
not grow close to the
paper disc?
2. What could be done to test if
your ideas are correct? Draw
your plan.
Materials: ‘Old’ Petri dishes,
spread sticks, paper discs,
forceps, various liquids.
In you group, plan your
group’s experiment –
consider that there is
room for four different
conditions. DRAW YOUR
PLAN in your notebooks.
Materials: ‘Old’ Petri dishes,
spread sticks, paper discs,
forceps, various liquids.
Preparing new agar plates –
procedure:
A. With a wax pencil, divide your
plate to four quarters. Write
your group’s name.
B. Add a drop of liquid medium.
C. Use the spreader to pick up
bacteria, spread gently on
entire plate.
D. Place prepared paper disc(s)
1) What was the purpose of the
experiment we started in
Friday? (Which question(s)
were we trying to answer?
2) What do you expect from
each of the four conditions
of the paper discs?
Journal 08.20.12
Observe the culture that you
started (or that of another group):
In your notebook,
1. Draw the resulting agar plate,
as detailed as you can.
2. Describe the main things we
can learn from the results, in
terms of A. our purpose, B.
our procedure.
Writing a time-line of what we’ve
done: “At first, there was an
outbreak of stomach ache….”
Our Story:
Steps:
Stomach ache
Problem
?
In a pair, use scrambled cards:
A. Sort out to general vs. specific
B. Place in sequential order.
1. Write down the steps in your
notebook.
2. On a separate paper - Write at
least FIVE LINES about the
bacteria experiments as if to a
friend. Include question,
evidence, conclusion.
Periods 2,4:
Scientific American Blog: What is
life?
Podcast: What is Life?
Wikispaces....
What is life - file