Project-Based Learning (PBL Basics)
Microbiology and Experimental part

Invisible Hand Germ Experiment
100

Name one key principle of PBL that involves working in teams.

Collabaration

100

Harmful bacteria that can cause illness are called:

Pathogens

100

What is the Invisible Hand Germ Experiment?

This experiment demonstrates how germs spread through hands.

200

Name a stage of PBL where students create a final report, poster, or presentation.  

Authentic Product?

200

Friendly bacteria that benefit human health are called:

Probiotics

200

The type of bacteria commonly studied in traditional fermented dairy products like yogurt and kefir:

Lactic Acid Bacteria (e.g., Lactobacillus)

300

Name the stage of PBL where students evaluate errors, reflect on what worked, and plan improvements.

Reflection

300

What is the Zone of Inhibition?

The clear area around an antibiotic disk where bacteria do not grow.

300

What is the Control sample?

This sample in the hand experiment shows what happens with no human contact.

400

What is the Driving Question?

This open-ended question, like "Can we find antibiotics in soil?", drives the entire PBL project.

400

What is the Gram Stain?

This staining method distinguishes bacteria based on the structure of their cell wall, categorizing them as Gram-positive or Gram-negative.

400

How does this experiment connect microbiology with public health awareness?

It visually shows how microbes spread and why hygiene prevents disease.

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