Discussing the content of education is a never-ending story. Naturally, with the development of sciences and our knowledge, we need to include new topics. Simultaneously, with limited lesson time, some other parts must be reduced or omitted. Thus, each generation has to inventory the most relevant topics for science education and define criteria for selecting the curriculum of STE(A)M subjects. It is generally better to cover fewer topics thoroughly, practising and consolidating basic facts and skills rather than many of them sketchily.