You need two teams and badminton rackets and a badminton ball.
The members of each team will stand nex to each other in a row. Their hands will be tied together and they will hold a racket with these hands.
Now the two teams will play badminton in a badminton field (you can draw it with a crayon if you don’t have a field).
My explanation isn’t that great. If you didn’t understand it, you will after you saw it.