We watched our petri dishes for 8 days. The first signs of growth came on day 2. The worst bacteria growth was on the TV remote and computer keyboard - ewww! Of course those things are touched by hands a lot and have so many little nooks and crannies!
Maggie's mouth had a little more bacteria than Fireflame's - That or her cooperation in swabbing gave us a better sample than his not so cooperative attitude! ~grin~
We opened each petri dish and used a swab to transfer some of the culture to a microscope slide. Then we took turns looking at bacteria.
Finally, I added bleach to each dish, sealed it shut and disposed of our bacteria experiments. But we have more petri dishes and liquid agar - so maybe, just maybe there will be another bacteria post in the future!
Disposable dishes were recommended for safety. Being able to kill and dispose of the bacteria as opposed to needing to sterilize glass dishes made this much safer with small children in the home.
Do NOT buy plastic microscope slides. The ones I have (from our school supply store) were so thin that they did not work with our microscope slide holder. I will definitely order glass slides from HomeScienceTools.com before making any more slides.
I am a Mom. That is my definition of me. I am Mom to four loud, busy, creative, strong-willed children. My husband is my very best friend and thankfully, just as strongwilled as our kids! Our house is loud, and I mean really loud, and disorganized, but always interesting. We homeschool, craft, play in the dirt alot, and love to travel!
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