Title – Create a title that describes the investigation.

Introduction:

Question – The challenge here is to come up with a question that is testable in an experiment you can perform. Clearly identify the variable you will change (independent variable) and the variable you will measure (dependent variable). Write the question in the form: “What effect does …IV have on …DV.” Note: If there is no independent variable in the experiment then briefly explain the purpose for doing the activity. If the lab is not a controlled experiment, then state the purpose of the lab.

Hypothesis – Your hypothesis should include: What you think the answer to your question will be, and why. Writing the hypothesis in the if … then … form helps to make it specific.

Variables - List your variables

1.  Independent variable (IV – the thing you change)

2.  Dependent variable (DV – the thing you measure)

3.  3 Control Variables (CV – the things that stay the same)

Materials: list all materials you used

Method:

Procedures – Briefly summarizing the procedures of the lab.

1.  Number your procedures in order.

2.  Do not simply copy the procedures, write them in your own words.

The basic procedure to measure cellular respiration is:

1) Add the same volume of glucose to each test tube

2) Add the same volume of yeast to solution to each tube.

3) Incubate the test tubes in a water bath.

3) Measure the depth of bubbles produced and observe how the balloons change after 5, 10, 15, 20 minutes.

4) Use 3 test tubes for each experiment

Diagram of Set-up - Small sketch that shows the lab in progress.

Results:

Blank Data Table – Data table EXCEL is ready for you to start entering data when you arrive.

Data – Create an experiment that allows you to quantify (measure with numbers) your results.

1.  Display your raw data a table

2.  Create a graph of data to communicate important data that answers your questions. (IV on X axis and DV on Y axis)

3.  All data and graphs must be labeled with Title and Units

4.  Show at least one example of each calculation

Discussion:

Questions – Either write out the questions or include the questions in the answers.

Conclusion – Discuss the results and validity of your experiment.

1.  Restate the question.

2.  State your hypothesis to the question.

3.  Do the results support your hypothesis?

4.  Discuss at least two sources of error in your data that would result from the design or logistics your experiment.

Grade 9&10 Lab Rubric Name:______Partner:______Lab:______Date:______

ECA standard

/ Aspects / Level

Standard 9 –

Designs Experiments
C= complete
P= partial
N= none / Defining Problem or Research Question / Formulating a hypothesis or prediction /
Selecting Variables
/ CCC 7 or 6
CCP 6 or 5
CCN 5 or 4
CPP 4
PPP 4 or 3
CPN 3
PPN 3 or 2
CNN 2
PNN , NNN 1 or 0
identifies focused problem or research
specific to this lab
__contains independent & dependent
variables

C P N

/ __ hypothesis related to aim
__ is quantitative if possible
__ explained & justified
relevant background on topic is
included

C P N

/ __ includes relevant
independent variables
dependent variable
stated
__ all controlled variables
are stated

C P N

Selecting appropriate apparatus or materials / Designing a method for the control of variables / Method for collection of sufficient relevant data / CCC 7 or 6
CCP 6 or 5
CCN 5 or 4
CPP 4
PPP 4 or 3
CPN 3
PPN 3 or 2
CNN 2
PNN , NNN 1 or 0
appropriate equipment selected
__ list or diagram included
__ diagram is labeled
__ sizes/quantities included

C P N

/ __ methods of how to control
variables are stated in plan
__ procedure detailed enough in
numbered format that a peer can
follow & produce same results

C P N

/ __ relevant data collected
__ irrelevant data not
collected
__ sufficient range of
independent variable
__ sample size is at least 5
__ multiple trials are planned for

C P N

Standard 10 –
Collects and processes data
C= complete
P= partial
N= none / Collecting & Recording Data / Organizing & Presenting Raw Data / CC 7 or 6
CP 6 or 5 or 4
CN 5 or 4
PP 4 or 3
PN 3 or 2
NN 1 or 0

__ raw data related to problem

__ all correct units are included
__ uncertainties are included (margin of
error)
__ all data collected is included

C P N

/ __ raw quantitative data is presented in table format with ruled
columns & rows
__ observations neat and in order
__ has meaningful title
__ table is complete and understandable

C P N

Processing Raw Data
/
Presenting Processed Data
/ CC 7 or 6
CP 6 or 5 or 4
CN 5 or 4
PP 4 or 3
PN 3 or 2
NN 1 or 0
__ correct type/method of calculations
performed
__ (if applicable) drawings correctly
labeled

__ sample calculations shown for every

type of calculation

__averages of several measurements taken
__data transformed so it may be represented graphically
__ drawing lines of best fit and determining gradients

C P N

/ __ correct choice of presentation to show patterns & relationships
(graph or chart, table, etc)
__ correct units used in table/graph
__ meaningful titles or headings used
__ answers given are to correct # of significant digits
margin of error given for processing
__ include error bars on graphs where significant
__draw line of min and max gradient
__determine uncertainty in best straight-line gradient
__ graph is laid out clearly & large enough /neatly
(graph paper, ruler used, etc.)

C P N

Standard 11 –
Draws conclusions and evaluates experiments /
Drawing Valid Conclusions
/ Evaluating procedure & Results / Improving the investigation / CCC 7 or 6
CCP 6 or 5
CCN 5 or 4
CPP 4
PPP 4 or 3
CPN 3
PPN 3 or 2
CNN 2 PNN , NNN 1 or 0

__ correct interpretation/conclusion

__ conclusion is in agreement w/
accepted ideals or literature
__ explanation of how the conclusion
was reached (based upon results)

C P N

/ __ comparison of hypothesis &
conclusion included
__ explanation for differences
included
__ evaluation of reliability of results

C P N

/ __ specifically identify all
weaknesses
__ impact of the problems
on results stated
__ for each problem a
suggestion for
improvement is given

C P N

Standard 12-

Manipulates equipment / Follows Instructions / Carries out techniques correctly / Works safely / CCC 7 or 6
CCP 6 or 5
CCN 5 or 4
CPP 4
PPP 4 or 3
CPN 3
PPN 3 or 2
CNN 2 PNN , NNN 1 or 0