Revision of already learned words: divide the class in two groups and give any group a name - Sun and Moon or something else.

One player of the Sun-group and one of the Moon-group try to tell as quick as possible the word that is on a flashcard. The one who does it first wins a point for his / her team. The winner is the team with more points - it is nice when there is a little award for the children - for example, the winning team may choose a favourite game to play or a song to sing.