We all talk about scientific issues such as plants, genetically modified organisms, air-water-environmental pollution, and education etc. in everyday life. But such small talks are not as simple job as it was thought, because, it is necessary to have a scientific qualification in order to state true opinions about the discussed topics. However, in order to fully understand the problem here, we must answer the following questions. Do we understand these issues in a way that does not conflict with scientific facts, and can we say we fully taught the students what we understand? Are we able to use scientific concepts correctly? What matter is our answer to these questions.