Fractions, vectors, derivations, and integrals – how can they be calculated? This is not only important at school. Such fundamental knowledge is also required in lectures of mathematics, informatics, natural sciences, and engineering. To facilitate the start of studies for future students, more than 20 German universities have developed two versions of an online course (in German only) for brushing up knowledge of mathematics. The course version “VE&MINT” is coordinated by the MINT-Kolleg Baden-Württemberg (course of lectures in mathematics, informatics, natural sciences, and engineering) of Karlsruhe Institute of Technology (KIT) and Stuttgart University. The cost-free course has been available on the internet since early March.