Biology

Pre-Lab Assignment

(Adapted from K.W. Fisher)

* The pre-lab assignment will be done in your journal. Note check calendar or overhead for specific instructions. NOT ALL PARTS ARE REQUIRED FOR EACH LAB.

* Before coming to lab, you should identify the experimental characteristics below for the specified lab.

* You may work together but copying another person's pre-lab is cheating. A grade of zero will be assigned for the lab if you are caught copying another person's pre-lab.

*Use this form.

1. State the hypothesis. Identify it as the hypothesis. You may use "If/Then/Because (IV/DV/Mechanism)" statements.

2. Identify the control group that will be used for comparison. (It does not contain the variable being

tested.)

3. Identify the dependent variable (DV). (the one that will change; the experimental group)

4. Identify the independent variable (IV). (the variable being manipulated)

5. Identify any other (standardized) variables that are being held constant in the experimental group. For instance,

each setup may be measured for the same amount of time; or each setup may have the same amount of

solution in each beaker, etc.

6. Identify what is being measured.

Example: (CO2 or H2O consumption; growth; production of a product; etc.)  

7. What method and/or time frame is used?

Example: I will take readings of . . . . . every 5 minutes for 30 minutes.

8. What is the rate of calculation and/or statistical application?

Example: average number of trials, slope of the curve, etc.

9. How will the results be verified? (sample size or repetition (how many times are you taking a measurement)).

10. How will the experimental results be presented? (graphs, charts, etc.) Create any necessary data tables or graphs.

11. What are the expected results? Why? This is your best prediction based on reading the lab and any

other information you obtain. (Other sources on information can be your book, the Internet, Cliff’s

book, etc.)

12. Create a check-list procedure and don't forget to create any data tables you will need!

Example: ____ 1. Measure 1 gram of sugar and place in 100 ml beaker.