Put one student on a special chair or spot in the class (he/she is the king/ queen).
You will be playing Rock, Paper, Scissors with people, but can only play against someone who is the same thing as you (see below).
Everyone starts with their hands on their knees (they are all eggs).
You walk around the class looking for another egg. When you meet an egg, play Rock, Paper, Scissors.
The winner “Evolves” into a chicken (hands on hips, wings flapping, chicken noises), and looks for another chicken to play.
The loser stays an egg.
When two chickens play, the winning chicken evolves into a crocodile (arms out in front, big crocodile teeth with your fingers), the loser de-evolves back into an egg.
When two crocodiles play, the winning crocodile changes into a giant (hands way up above head, stomping around with big steps). The loser de-evolves back into a chicken.
When two giants play, the winning giant can go and challenge the student on the chair (the loser turns back into a crocodile). If the giant wins, he/she is the new king/queen, and the old king/queen turns into an egg. If the giant loses, he goes back to an egg and the king/queen stays.