Blog #10 - Microorganisms on the rise

By NBailly 16:05, May 26 2014 (CDT)

Last lesson students at Kaiser-Karl-Gymnasium took environmental samples using a variety of different contact agar plates. On the weekend, René examined the plates under the microscope and took photos. Today René and Nina present the students the results of the experiment. But first, we showed the students an excerpt from the TV show "Planetopia" that broaches the issue "Hygiene in every-day life".

Staphylo- and micrococci as well as Enterobacteria, Candida yeasts and miscellaneous fungi are found on the majority of plates. But why is there no growth on the plates containing the antibiotic? Actually, what is an antibiotic, how does it work and why are there multi-resistant pathogens? Nina explained the answer to all these questions to the students using descriptive graphics, and concluded the topic "Microorganisms in our Environment" with a short summmary.

As a starter for our next topic that is relevant to our project, we distribute a worksheet about quorum sensing among the students. For the remainder of the lesson, the students read the text and begin to answer the attached questions.