The opinions of pre-primary education teachers on the advantages and disadvantages of heterogeneous age groups

Rochovská, Ivana, 1983-

The opinions of pre-primary education teachers on the advantages and disadvantages of heterogeneous age groups / Ivana Rochovská ... [et al.]

In Problems of education in the 21st century. -- Šiauliai : Scientia Socialis, 2019. -- ISSN 1822-7864. -- ISSN 2538-7111. -- Vol. 77, no. 3 (2019), pp. 424-436