Monday, September 10th
Entry Task
Answer the following
questions using full
sentences, IQIA (Include
the Question In the
Answer)
1. Explain what an
observation is
2. Make an observation
about something in this
class
3. Explain what an
inference is
4. Make an inference about
something in this class
Schedule:
• Observations and inferences
Objective:
•I can tell the difference
between an observation and an
inference
Homework:
• Anything not finished in class
Please have on your desk:
• Supplies to be checked
• Lab safety contract parent
signature sheet
• TMNT Lab Safety Worksheet
Observations and Inferences
Terms
• Observation- act of noting and recording an
event, characteristic, behavior or anything else
detected with an instrument or with the senses
– Qualitative observations- descriptions of sights,
sounds, smells and textures
– Quantitative observations- expressed in numbers
and include records of time, temperature, mass,
distance and volume.
• Inference- logical conclusion drawn from
available evidence and prior knowledge. Attempt
to explain what we see.
Tuesday, September 11th
• Entry Task
Share with your neighbor
your observations and
inferences worksheet
from last nights
homework. You both
should discuss the
answers that you had in
common and you should
point out ones that you
may have missed. Write
down at least two
similar answers and one
different answer in
your notebook.
Schedule:
• Hypothesis
• Identifying Variables
Objective:
• I can understand how to write
a hypothesis
• I can understand how to
identify variables
Homework
Hypothesis and Variables WS
Please have on desk:
Observations and Inferences WS
Hypothesis Terms
– Hypothesis: An explanation for an
observation phenomenon
– ALWAYS form a hypothesis in an “IF,
…….. THEN, …….. BECAUSE……..”
statement
Variables Terms
– Manipulated Variable: What you are
changing
– Responding Variable: What your result
is-the change you see/measure
– Controlled Variable: What you are
keeping the same
Homer notices that his lawn has lots of
weeds. His friend Barney tells him that
Baking Soda will get rid of the weeds. Homer
decides to try this out by spraying the right
half his lawn with Baking Soda. He continues
to simply leave the left half of his lawn alone.
Both sides of the lawn get the same amount
of sunlight and both receive 50ml of water
every other day. Homer runs the experiment
for 3 days and then counts how many weeds
are in each half of his lawn.
Identify the following:
•
Manipulated Variable:
•
Responding Variable:
•
Controlled Variables: (give me 3)
My brother thought that if he ate
McDonalds for every meal for thirty
days that his weight would go up
because McDonalds meals are high in
calories. He weighed himself every
morning all thirty days and afterwards
compared his weight with his weight
before the experiment.
Identify the following:
•
Manipulated Variable:
•
Responding Variable:
•
Control Variable:
Joe thought his new Nike shoes made
him run faster. He decided to test his
idea. He measured out 100 meters at
his local park, and had a friend time him
as he ran 100 meters ten times in his
old shoes, and ten times in his new
shoes. Joe also waited 2 minutes
between each run to catch his breath.
Identify the following:
•
Manipulated Variable:
•
Responding Variable:
•
Controlled Variables: (give me 3)
Thursday, September 13th
Entry Task
1. Create a hypothesis for
each of the following
problems
Problem: Is Diet Coke really
“Diet”
Problem: Does a plant need
light to grow
2. What are the 3
variables in an experiment?
3. Identify the 3 variables
for the following problem:
Does fertilizer make a plant
grow bigger?
Schedule:
• Oreo cookie Lab
Objective
• I can understand how to
design a lab using the
scientific method
Homework:
• Figure out a way to create a
graph to represent your data
from lab. Do this in your
notebook.
Please have on desk:
• Hypothesis Worksheet
Double Stuff Oreos
VS
Regular Oreos
• The purpose of this experiment is
to see if double stuff Oreos are
really double stuffed.
• IF double stuff Oreos are truly
double stuffed THEN the double
stuff Oreo will have twice the
amount of “stuff” than a regular
Oreo BECAUSE the company
has machines that can fill the
Oreos exactly and the company
isn’t allowed to lie.
• Manipulated:
Type of Oreo – double stuff or regular.
• Responding:
The mass of the stuff.
• Controlled:
The balance used.
Oreo brands
• 1 double stuff Oreo
• 1 regular stuff Oreo
• Balance
1. Gather materials.
2. Carefully twist off one side of the
cookie from both Oreos.
3. Measure the mass of the cookie with
no filling on it for both cookies using
the balance. Record in data table.
4. Measure the mass of each cookie with
the filling on it using the balance.
Record in data table.
5. Calculate the mass of stuff by
subtracting the cookie mass from the
cookie + stuff mass.
6. Repeat steps 1-5 twice to have 3 trials
total
Friday, September 14th
Entry Task
Get out your “how to write a lab
report” worksheet. Please
read over the remaining
sections that we did not get
to yesterday. (Data Table 
Conclusion). Pay special close
attention to the conclusion
because you will be doing this
on your own later today and
will need to know how to do
it.
Schedule:
Oreo Cookie- Lab Data
Collect, Analysis and
Conclusion
Objective:
• I can collect data and
understand how to
analyze data and make a
scientific conclusion
Homework:
• Final Lab Report-due
Monday
Mass of
cookie +
stuff
Trial #
Regular
1
g
g
g
2
g
g
g
3
1
g
g
g
g
g
g
2
g
g
g
3
g
g
g
Double
Stuff
Mass of
cookie
Calculated
mass of
stuff
Type of
cookie
Graph
Conclusion
Use these guidelines to write your conclusion in paragraph form.
DO NOT USE THE WORDS “YOU”, “WE”, “I”, “IT”, “MY”, ETC!
• What was the purpose of the experiment?
• How does the data answer the question from the problem
statement?
• Give examples from the data to support what the answer is – USE
NUMBERS!
• State whether the hypothesis was supported by the data.
• Give a different example from the data to explain whether the
hypothesis was supported or not – USE NUMBERS!
• What were possible sources of error in this experiment?
• Give 2 to 3 specific examples of possible error from the experiment.
• Summarize what was learned and what the results support.