Get your 8th-grade science class intrigued and engaged with a fun experiment exploring the growth of bread mold! From understanding the microscopic mold spores to witnessing the power of the fungus up close, this experiment is perfect for teaching students about living organisms and their habitats. With a few simple ingredients, observe how long it takes for the spores to colonize and form colonies as you learn about the lifecycle of bread mold.

Bread mold is a simple fungus that derives its food from a variety of materials such as grains, fruits, vegetables, or flesh. Mold spores are tiny and usually remain suspended in the air. As soon as it finds the right environment for it to grow, the spores transform into the living fungus and reproduce quickly. They spread rapidly and can form a colony within 24 hours.

Mold thrives in moist, warm environments. It is important to reduce the amount of moisture in your home or food items in order to avoid mold growth. Keeping your environment dry, ventilating properly, and controlling humidity levels are all effective methods for discouraging mold growth. Regularly cleaning and inspecting your home can also help keep mold at bay. If you do find mold in your home, it is important to take action immediately to prevent further spread. Use cleaning products like bleach or vinegar to kill the mold and then thoroughly clean the area where the mold was found.


How do bread molds come to life?


  • 1 slice of bread
  • resealable airtight plastic bag
  • dropper
  • cotton swab
  • milk
  • carton
  • adhesive tape
  • water
  • disposable rubber hand gloves for protection (disposable)


  1. Prepare all the materials needed.
  2. Collect dust from the ground on a cotton swab.
  3. Rub the soiled end on a slice of bread
  4. Put 6 drops of water on the bread slice
  5. Put this bread slice in an airtight bag and seal it.
  6. Place this sealed bag in an empty milk carton (preferably with milk remains in it) and seal the carton
  7. Leave the set-up undisturbed for 24 hours.


When the sealed package is opened after 24 hours, the bread slice should be covered with bread molds. Write your observations. How many colors of bread molds are present on the bread slice? Do not inhale the mold spores while handling the bread molds. Always wear disposable gloves when handling the bread molds.

The experiment demonstrates that bread molds come to life when exposed to moisture and warm temperatures. The colors of the bread molds present on the slice of bread are a result of their varying species. It is important to note that mold spores can be dangerous if inhaled directly, hence it is advised to wear disposable rubber gloves for

It is concluded that wet conditions can trigger the germination of mold spores. The dust from the ground also serves as their nutrition so they thrive very well and very fast. These spores develop into living fungi once they get the proper nutrition and suitable environmental condition. Furthermore, the experiment also showed that mold spores can take very little time to germinate and form colonies. Therefore, it is important to be aware of any possible mold growth in our homes or food products. It is advisable to maintain cleanliness and proper hygiene to avoid mold growth.


Bread molds are microscopic fungi that feed on the carbohydrates in bread. They reproduce by releasing spores that can settle on other pieces of food, allowing them to grow and spread through a pantry or kitchen. Moisture is necessary for the spore to germinate, so it’s important to store bread in a cool, dry place. In addition, proper hygiene and cleanliness are essential to controlling the growth of mold and other microbes. Bread should be stored in an airtight container or plastic bag after being used, to prevent moisture from accumulating on it. If you find mold growing on any food item, it should be discarded immediately as it may contain harmful toxins. Additionally, food items should be regularly inspected and discarded if mold is present. Finally, proper ventilation and humidity levels in the kitchen or pantry can help keep mold spores from growing on stored foods.

By following these steps, you can help prevent bread molds from settling on your food and potentially causing illness.


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