Microbes Are Everywhere
It is important that students always think about safety when conducting a science investigation. This slide may be used to review safety with your class before starting the activity. Also, keep the following points in mind.
- Always follow district and school safety guidelines.
- Have a clear understanding of the investigation in advance (practice any investigation with which you are not familiar).
- Continually monitor the area where the investigation is being conducted.
- Do not allow students to test any body fluids for microbes, as these fluids might grow a disease-causing microbe.
- All supplies that come in contact with cultured microbes should be disinfected with a 10% chlorine bleach solution (10 mL chlorine bleach mixed with 90 mL water) and disposed of in accordance with district and school safety procedures.
- After the nutrient agar has been inoculated with the cotton swabs, seal the Petri dishes with masking tape to prevent exposure to the growing microbes.
- Before and after the activity, disinfect all work areas with a 10% chlorine bleach solution.
- Moreno, N., Tharp, B., Erdmann, D., Rahmati Clayton, S., Denk, J. (2008). The Science of Microbes Teacher’s Guide. Houston, TX: BioEd.
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Grant Number: 5R25RR018605