What all machines have in common is that they all perform mechanical movements. The micro-module is intended to develop an understanding of the basic structure of mechanical parts of machines, i.e. how motion is obtained in machines. If we are concerned about mobility, or the system that allows motion, we see the core component in it – a machine that performs mechanical motion. The micro-module presents an overview of the main types of mechanisms used in machinery, their kinematical and load capacity properties. Special focus is made on gear mechanisms developing abilities to calculate the necessary power to get the desired motion under loads caused by it, select the mechanism structure, to analyze motion parameters.