The hypothesis is that garlic will kill bacteria and prevent its further growth.

You will prepare 3 agar petri dishes with blood agar, measure out 300ml of milk, extract garlic juice, add E. Coli specimen to test tubes, and measure the growth of the bacteria colonies.

You will need 3 agar petri dishes, 300ml milk, a measuring cup, 5 pieces of garlic, 3 test tubes, 4 syringes, an E. Coli specimen, 2 toothpicks, and a permanent marker pen.

The results showed that the test tube with the milk and E. Coli specimen had the largest colony of bacterial growth, while the test tube with milk, the E. Coli specimen, and garlic extract did not show any signs of bacterial growth. This proves that garlic can kill bacteria and prevent its further growth.

This science project is interesting because it shows how a common kitchen ingredient can be used to fight bacteria.

Experiment variations to consider include boiling the garlic before extracting the garlic juice, and repeating the experiment using onions or cloves instead of garlic.

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