Scholars explore the procedure for bacteria sampling in a virtual lab by first walking through a detailed step-by-step procedure of preparing the samples of raw milk and pasteurized milk, growing the bacteria, and comparing results. Then, they visit a milk processing plant and swab tanks to gather samples and repeat the experiment. Finally, pupils learn how to use the process of bacterial sampling to determine how many colonies exist.

Concepts

bacteria, microscopes, controlled experiments, experimental design, agricultural products, local agriculture, pasteurization, random sampling, sampling, microbiology

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Additional Tags

science

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Instructional Ideas

• Use as an alternative to the hands-on experiment to support visual learners
• Introduce the concept of pasteurization, then have small groups research other applications of pasteurization in food science

Classroom Considerations

• Computers or devices must have Adobe Flash

Pros

• Teaches some standard lab techniques
• Activity is engaging and interesting

Cons

• None

Common Core

RST.9-10.3 RST.11-12.3