The flags of Eastern Europe matching was designed to be part of a unit of study on Eastern Europe. In my Montessori classroom we do monthly themes on different continents and regions of the world. I made this flag matching to go with my unit of study on Eastern Europe.
When using this work I print two copies of the paper. One copy of the paper is the control sheet and the flags on the other copy are cut apart and matched to the correct flag on the control sheet.
The Tinkering Shop has several other Eastern Europe related materials to make up a unit on Eastern Europe.