Do Now 
• Please place your COVERED books on
your desk!
• List 5 safety rules one might encounter in
the lab!!
Objectives
SWBAT…
• Explain the rules that must be followed in
our classroom.
• Understand the importance of safety in
lab.
• Identify different situations in which safety
precautions should be taken.
Before we talk about safety…
• Rules sheet- any questions?
• Please have the back portion of your rules
sheet signed by both you and your parents
for the next class.
Lab Science…?
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What is a lab?
Why do we have labs?
When do we have them?
How long do we get to complete them?
Lab partners?
Safety Contracts!
****All students MUST have a signed safety
contract in order to participate in lab!
Anyone who fails to hand in this contract
must sit out during the lab and will
therefore receive a 0 for that lab. Please
get them in!!!****
Lab Safety
• TELL ME ANY TIME THERE IS ANY ISSUE
INVOLVING SAFETY IMMEDIATELY!!!!
• Follow Directions!! Only do what the lab
procedure says to do.
• NEVER TASTE A CHEMICAL!! Don’t touch it
with your hands, apply make-up, or eat or drink
during lab.
• Keep all lab equipment clean and tidy. A clean
workspace is a safe workspace!
• Never pour chemicals back into “stock” bottles
Lab Safety
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Long hair MUST be tied back.
You must wear close-toed shoes – no flip flops
Test tubes should always face AWAY from you.
All broken glass should be disposed of in the
broken glass container.
• Check with me before dumping anything down
the drain!!
• No “horseplay” during lab please!
Lab Safety
• No lab materials should be taken from the
laboratory room unless you are told by me
to do so!
• Safety goggles must be worn at ALL
TIMES, and anyone who takes them off
will receive a zero for that lab.
Safety Equipment
• Please make a sketch in your notebook of
the room and add any safety equipment
that you see to it.
Turn to the person sitting next
to you…
• Please work on the worksheet that you
have been given.
• Look at each picture and try to determine
what is wrong. Then explain the SAFE
way to perform the experiment being
pictured.
Do Now
• What types of things would a biologist
study? Make a list!
• When you are done with your list, get with
your partner from yesterday and continue
working on your safety worksheet.
Objectives
• SWBAT
– Identify different fields of biology.
– Understand how and why different fields of
biology are studied.
– Explain the different qualities of a scientist.
– List the steps of the scientific method.
Safety Review
• What are they doing wrong in the pictures?
• **Reminder – LAB IS ON MONDAY!! PLEASE
HAVE YOUR SAFETY CONTRACTS SIGNED
BY THEN OR ELSE YOU WILL NOT BE ABLE
TO PARTICIPATE.
What is Biology?
• The study of life or once living things!
• Depending on what they study, biologists
are given specific names.
– Ex: Does anyone know the name of a biologist who
studies or works with cancer?
– What must they know about biology to do their job?
Fields of Biology
•
Lets try to come up with a few things a
biologist might study! Look back at your Do
Now
Get with the partner that
matches your number on the
top right sheet of your paper.
• Work with your partner to try to determine
what type of biologist you would go to in
the different circumstances that are listed.
• Which do you find to be most interesting??
Lab Day!!- Do Now
• Please hand in your safety contract. If you
do not have your contract today, you may
not participate in today’s lab.
• What types of equipment might you use
during lab? List them!
Objectives
• SWBAT
– Identify different pieces of lab equipment that
will be used during lab.
– Use different pieces of lab equipment to make
measurements of mass, volume, and length.
– Explain why the SI system is used for
scientific purposes.
Popsicle Partners
• If I call your name, please come and pick a
popsicle stick to determine your lab
partner for today.
• After you have your partner, take a
handout and head back to the lab tables to
begin identifying objects.
After you have identified all
objects…
• Once you are done, take a “Measurement
Lab” sheet from my desk. Use the different
tools in the room to practice taking
measurements by following the directions
on your lab worksheet.
Do Now
• Pick 3 scientists that you found to be most
interesting from our last assignment.
• What do these specific scientist do?
Objectives
• SWBAT
– Explain the different qualities that all scientists
share.
– List the steps of the scientific method.
– Compare and contrast observations vs.
inferences.
What do all scientists have in
common?
• All scientists share similar qualities
• They are…
– Curious:
– Observant:
– Creative:
– Skeptical:
*They all go through the same process in their
line of work. Can you guess what it might be?
The Scientific Method
• http://www.youtube.com/watch?v=GUQUq
V0_PTc
The Scientific Method
1. Identify the problem- observe and ask
questions.
2. Research and form a hypothesis
3. Test your hypothesis- experimentation
4. Collect and record DATA
5. Conclusion- Analyze your data. Was your
hypothesis correct?
1. Observe and ask Quesitons
• All scientists make observations that lead
to different questions, without these
questions we can’t experiment and without
experimentation we wouldn’t have
ANYTHING!
What is an observation?
• Lets make some observations about what
Miss B is holding…
Observations vs. Inferences
• Observation- direct way of gathering
information in an organized way.
• Inference- taking observations and
making a logical conclusion
Lets do some practice!
• Make a list of observations in your
notebook as you watch this scene from
finding nemo!
Lets draw some inferences from
our observations…
Do Now
• Without using your notes, try to list the
steps of the scientific method.
• Make 3 observations and 3 inferences
from the picture.
2. Determine what is already
known and form a hypothesis
• How might we determine what is known?
– 1)
– 2)
– 3)
Forming a Hypothesis
• Hypothesis - a testable explanation of a
situation.
• Hypothesis that are supported through
experiments and data are then accepted in
the scientific community.
• Usually written in an “if… then” statement.
– Example:
• If salt is added to water that is being heated then
the water will boil at a faster rate.
Identify the hypothesis
• A study is being done on the increase in cases
of skin cancer. It has been said that skin cancer
shows a direct correlation with exposure to UV
light. If skin cancer is related to ultraviolet light,
then people with a high exposure to UV light will
have a higher frequency of skin cancer.
• Is this hypothesis a testable hypothesis?
Which hypothesis are testable?
• Chocolate may cause pimples.
• Good instructional design and proper application
of media can lead to effective learning.
• Bacterial growth may be affected by
temperature.
• Students who give teachers gifts tend to earn
higher grades.
• Temperature may cause leaves to change color.
3. After forming a hypothesis you
INVESTIGATE/EXPERIMENT!!
• You have noticed that the plants in your garden are
beginning to wilt and die. This could be due to a number
of different things. You want to figure out why this is
happening because you yard is starting to look
TERRIBLE! First you observe that the plants closest to
the house were the first to start wilting. You then observe
that there is a gutter dumping water directly into your
garden. You hypothesize that this may be the reason
your plants are dying. How could you test this
hypothesis?
• Can you be positive that it is the runoff that is causing
the problem?
Experiments
• What is involved in an experiment?
1. Independent Variable: variable being tested
2. Dependent Variable: variable being
measured
3. Control Group: group that remains the same
4. Experimental Group: Group that is
manipulated or changed.
5. Constants: factors that remain the same
throughout the entire experiment.
Identify the components of the
experiment
• A group of college students were given a
short course in speed-reading. The
instructor was curious if a monetary
incentive would influence performance on
a reading test taken at the end of the
course. Half the students were offered $5
for obtaining a certain level of
performance on the test, the other half
were not offered money.
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Independent Variable:
Dependent Variable:
Experimental Group:
Control Group:
Constants:
Homework!!
• For homework you have a worksheet on
experiments. This will be due the next
class.
Collect and gather data
• Data- information gained from observations.
• Quantitative Data- measurements of time,
temperature, length, or other factors.
• Qualitative Data- descriptions of what our
senses detect.
Gather both qualitative and
quantitative data about the
picture below.
What are some ways to present
data?
• Organize data into a chart
• Take data from chart and create a graph
– Bar graph
– Line graph
– Pie chart
5. Analyze Data to from a
Conclusion
• We have to do something with our data!
• What can we conclude from this graph?
Report your conclusion!
• After experimenting you must come to some
type of conclusion either disproving or proving
your hypothesis!
• Conclusions in the scientific world are usually
published so others can review the results and
discuss the merit of the experiment.