Core 1 Serve with emphasis on flat hand, stretched arm and that they stand slightly bent over.
In groups of 2 near the wall with 1 ball. On about 2 meters distance. Player 1 serves and player 2 catches then player 2 serves and player 1 catches.
Split the group in 2 for the next exercises
Field 1) diagonally there are sticky bags in the field. The players start with the bag closest to the net. Serve 2 times well and then you may go to the next one. If you have lost everything you get 1 point and you start all over again. Get the ball yourself
Field 2) field full of hoops and 3 rows of servers. You serve in the hoop then that hoop is for you. Who has the most hoops? Get the ball yourself.