We wanted to know more about our bodies, infection and disease. We wanted to find out how we can learn about this and reduce illnesses in our schools. We asked the questions and now, our Dirty Stinky Children project is going to find the answers. Here is the video we sent to the Wellcome Trust who are going to fund the project.
All of the children in Irchester Community Primary School will be investigating biomedical sciences and the good, the bad and the ugly of microbiology!
Microbiology is the study of microbes and their interactions with humans, animals, plants, and the environment. Microbes are those organisms usually too small to be seen by the naked eye, such as bacteria, viruses, yeast and algae
From this page, we will be uploading our work on our project so feel free to look, comment and share ideas!
Swabbing the School (Irchester)
Posted on July 7, 2014 by lab13network
We swabbed different parts of the school searching for bacteria. To do this we had to make agar gel.The way this works is the bacteria feeds on the glucose in the nutrient agar which makes them grow into a colony very fast. Even though we can’t see microorganisms, colonies of them are visible. Then we can use graph paper to roughly calculate what % of the agar is covered with microbial colonies.
We made agar gel by mixing 4g of agar powder with 200mls of water. After we mixed the solution we heated it up on a Bunsen burner, we waited until it boiled then we had to quickly remove it from the flame before it frothed over. We left the solution for about 10 minutes to cool down. After the liquid cooled down we had to quickly pour it into several petri dishes where it would set.
The next day we swabbed different parts of the school to see how much bacteria on it there was. We took samples from the keypad at the door, the office phone, the PE mats, the tap, the water fountain, Mr Lett’s pen, a Year3 door handle and our own fingerprints. The, we left the agar plates in a cool dry place for 6days. When we checked again we were astounded at our results. Just as we had predicted there were a lot of different types of microorganisms around our school and even on our fingers! The colonies were lots of different colours, shapes and sizes showing us the range of microbes that are living around our school!