Science and Our Food Supply: Investigating Food Safety from Farm to Table

2

LAB:

 CONDUCT THE LAB 

Option:

 Students can design a data table to 

record their results.

1. 

Ask the students to review their experimental 

designs. 

2. 

Have teams carry out their labs. Note: You 

may need to show the students how to dip 

the sterile cotton swab into the juice and then 

inoculate the dishes (see page 8). 

3

LAB:

 COLLECT, ORGANIZE, AND REPORT RESULTS  

1. 

Have teams observe the results of their lab and report their results 

to the class. Note: The unpasteurized juice should have a greater 

number of colonies when samples of both juices are plated on  

agar dishes. 

2. 

Together with the students, analyze the adequacy of the  

experimental designs. Ask students what they would do to  

improve their labs. 

3. 

Ask the students to relate their findings to food safety. 

4. 

Review how the students used the various pieces of equipment  

and how they designed their labs, complete with controls. 

MODULE 3:

 PROCESSING AND TRANSPORTATION

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