The Power of Hand Washing

Needs:

  • Ziploc bag 

  • White bread

  • Hand sanitizer

  • Hand soap 

 

Questions: 

  • What do you think we need to wash our hands to kill germs?

  • Does hand sanitizer work? 

 

Hypothesis:

  • Hand sanitizer is as effective as washing hands. 

 

Procedure:

  1. With unwashed hands, touch a piece of bread and place it in a bag. 

  2. Next, use hand sanitizer then touch bread and place it in a bag. 

  3. Finally, wash your hands for 20 seconds and touch the bread. Place it in a bag. 

  4. Over the next few days, record the bacteria growth. 

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