Because it is a warm-up, you can't use games that consume too much energy. All three are good. If you don't know, I can introduce this game to you.

Mine fuse explosion: more than 2 people play. At the beginning, everyone said a number-1,2, 3, 4 ... For example, you said "2" and jumped the second time. No matter who can only jump one step, you can choose to attack or retreat. Attack: Jump one step and your toes will touch the feet of the next classmate. Students whose feet are touched will be eliminated. Back: Take a step back.

Check box: I believe everyone knows this, so I won't introduce it much.

Unbutton: This is a new game. More than 5 people play. For example, there are six people, palms and backs of hands, who are different from others as unbuttoners. The remaining five people let the unbuttoner turn his back and hold hands, so that one person enters the circle and the other person enters ... Anyway, your hand has been holding, but you try your best to make it difficult for that person to untie. In the end, if that person unties it, these five people will lose.

I hope you will adopt it! Thank you~