Abstract
The contribution presents five categories of criteria for evaluation of worksheets developing pre-mathematical literacy on preschool level. The criteria were used for evaluation of 2000 worksheets used in the Czech Republic (2014-2018).
The results of this analysis were used in creation of semi-finished worksheets that ask for a child's graphical action on the basis of transformation of speech to a graphical communication code and consequently transformation of the graphical code into speech. The subject of coding and decoding is space-time information.