The paper presents an up-to-date way of teaching Multibody Systems combining the the-
ory with its basic equations and the numerical solution with corresponding methods in one procedure. The examples demonstrate how the basic equations like the Lagrange equation of second kind or the Newton-Euler equations may be taken directly to derive the necessary equations for the subsequent numerical steps. The procedure was demonstrated with the software Matlab which is capable of performing symbolic and numeric operations. The advantage of such a programming language is that it offers a huge variety of different numerical methods. The user is not restricted to predefined steps given by a certain software. The derived models may for example be used directly for the analysis and design of a controller within the same software