We are reading the book 'The Goldfish boy' by Lisa Thompson. This book is about a boy who has an extreme fear of germs and has Obsessive Compulsive Disorder.
We wondered how many germs are on surfaces in our classroom so we used petri dishes with nutrient agar to test out different objects on our classroom, for example, Chromebook keyboards, Edie's whistle, shoes...
We used a cotton bud to swab the surface and then lightly brushed it onto the agar.
We will now wait to see what happens...
Would love to see an update of the results!
ReplyDeleteWhat a good idea! I always wonder how clean chromebook keyboards are - actually all keyboards - as there are a lot of fingers touching them on a daily basis. I can't wait to hear what your experiments reveal. What do you think is going to grow the most bacteria??
ReplyDelete