Games for 4 years Duck, Duck Goose
A group of players sit in a circle, facing inward, while another player, the "fox”, walks around tapping each player in turn on their head, calling each a "duck" until finally picking one to be a "goose" The "goose" then rises and chases and tries to tag the "picker", while the "picker" tries to return to and sit where the "goose" had been sitting. If the picker succeeds, the "goose" is now the new picker and the process begins again. If the "goose" succeeds in tagging the picker, the "goose" may return to sit in the previous spot and the "picker" resumes the process.
You can Google the game and select the wiki option to see an animation, which explains this in greater detail.
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