Pravidelnosti jsou základem pro budování algebry a schopnost rozeznat pravidelnost a umět s ní pracovat je důležitá pro rozvoj abstraktního myšlení. (cs)
Patterns are fundamental in building algebra and ability to recognise them and to know how to work with them is important to the development of abstract thinking.
Patterns are fundamental in building algebra and ability to recognise them and to know how to work with them is important to the development of abstract thinking. (en)