Teaching plan from 2013 in the subject area of Mathematics - Algebra, grade: 1, Center for Practical Teacher Training Lüdenscheid, language: German. Abstract: Development of a series and an individual lesson with materials according to the specifications of the OVP 2011. Topic of the lesson series: The world of geometric bodies, their properties, nets, and oblique images exemplarily developed using cubes and rectangular prisms - a hands-on and production-oriented lesson series with cooperative partner and group work, as well as presentations and museum visits. Topic of the lesson: From solid to surface - a process- and production-oriented engagement with a real situation and everyday objects, within a cooperative group work followed by a presentation, to create a net from a cube and a rectangular prism.