Economic sciences are part of the human sciences, sciences that attempt to understand the complex behavior of Man in the face of scarcity, society, power, etc. Having an economic culture does not in any way mean mastering the workings of economic SCIENCES with the different schools (classical, Keynesian, monetarist, neo-classical, etc.) and the different disciplines: microeconomics, macroeconomics, monetary economics, etc.). Faced with this complexity, high school students and university students often find themselves helpless to understand the subtlety of economic analysis and sometimes find it "boring" and "ambiguous", especially with the divergence of economic theories. The purpose of this class is therefore to simplify economic thinking as much as possible for you in order to better understand the behavior of different economic agents and thus grasp the subtlety of the economic models used to understand major economic problems and possible solutions. A short course summary, simplified explanations and continuous interaction are the key words of my class and my teaching approach.