The term “simple machines” (also referred to as force-saving, force-converting or labour-saving machines) covers tools or mechanical devices that serve to convert a force or optimise the effect of a force. Examples of simple machines are the rope, the lever, the pulley and the inclined plane (wedge), which are found in some combination in almost every power machine. 
They play a large but often unrecognised role in the environment. Wheelchair ramps, the screw thread, the lacing of a shoe or the door handle are examples. By dealing with simple machines, physics lessons help pupils to perceive their environment differently and to recognise the physical principles of simple machines like a pattern in multiple everyday applications. 
Simple machines are a traditional topic in physics lessons that is often in the curriculum at the beginning of secondary level I. Sometimes the topic is recommended for general science at primary school. The examination of simple machines is justified because of their high relevance to the world of life and the culturally anchored knowledge that is linked to them. 
The following topics and technical terms are usually dealt with in combination, using several, quite different application models from everyday life:
The models, from bus windscreen wipers to aircraft landing gear, from counters to vending machines, provide comprehensive insights into various mechanical principles and the basics of physical action thanks to their simple design and easy-to-understand explanations.
The task sheets are formulated according to the educational plans in a skills-oriented way. The objective is to control, reflect and evaluate your own thinking when solving problems and thus build up new knowledge. Problems are to be recognised, problem-solving strategies developed and applied.
In this way, real technical knowledge is imparted – in a playful and easy way, but in depth according to your wishes and needs. Along the way, spatial awareness, logical thinking, problem analysis, physics basics and the understanding of technology used every day are trained and experienced in experiments carried out by the children themselves.