The three fundamental shapes in geometry
The complexity of these geometrical shapes, the simplicity is challenging.
This shape is an ideal springboard for students to start a geometrical experience and is opening doors throughout the chapter. One can link various aspects and relations to these three objects, this picture. The nomenclature has its beginning in this image and can be transposed to further aspects. Once the right language, terminologies are in place, furthermore can be given, built upon, extracted and created to proceed deeper.
Even the use of tools that are needed for geometry can be introduced by creating this image. Ruler, protractor, compass and pencil are needed to create. These tools will be following the students throughout their career and be needed all the time.