Salty Pits

This Salty Pits activity & project also includes:

Yuck, does my deodorant kill that? To test whether deodorant is anti-bacterial, class members use petri dishes to grow control bacteria and bacteria from sweat, and then compare them to see if deodorant effects the growth. 

11 Views 6 Downloads NGSS: Adaptable

Instructional Ideas

  • Use several types of deodorant to find which works best at controlling bacteria
  • Compare deodorant to anti-bacterial lotion or soap
  • Use a structured protocol so pupils can make accurate comparisons 
Classroom Considerations

  • Requires scientific materials such as agar and bacterial samples

  • Includes reasons if the bacteria did not grow as anticipated
  • Provides a list of materials needed

  • Requires overnight storage to allow bacteria to grow