Class participation activity

I did an activity in class, something that can be done with children. The excercise can teach ryhthm, consentration and interacive skills.
Basically there were rows of number 1-4 in any order for example:
1234
4321
2341
2222
3333
Each number represents an action: 1. You snap 2. you jump 3. Sing 4. Whistle.
This exercise is so versatile because you can break into groups and each person can be assigned a number and whenever there number comes up they have to do the action. It can be like a cannon with other groups of fours. It can also be done where everyone one on the class just read the numbers and do all the required actions at the same time. Also the numbers can be read across or down. It was a very fun activity.