More ideas from Jodie
science....and this is why we WASH our hands! It would even be cool to do other jars with hand sanitizer and plain water  Lots of ideas about other science activities too!

Apples & Handwashing: We put a clean apple slice in one jar. We passed another apple slice around the class as we came in from recess with dirty hands. We have been observing the two jars in the science center. This is the difference after 8 days - gross!